Atomic Edge Proof of Concept automated generator using AI diff analysis
Published : May 8, 2026

CVE-2024-13362: Freemius <= 2.10.1 – Reflected DOM-Based Cross-Site Scripting via url Parameter (fullworks-anti-spam)

Severity Medium (CVSS 6.1)
CWE 79
Vulnerable Version 2.3.7
Patched Version 2.3.12
Disclosed April 29, 2026

Analysis Overview

Atomic Edge analysis of CVE-2024-13362:

This vulnerability is a reflected DOM-based Cross-Site Scripting (XSS) via the url parameter in the Freemius SDK versions up to 2.10.1. The flaw affects multiple WordPress plugins and themes that bundle the vulnerable Freemius library. An unauthenticated attacker can inject arbitrary web scripts that execute in the context of a victim’s browser session after tricking them into clicking a crafted link. The CVSS score is 6.1 (Medium), reflecting the need for user interaction but no authentication requirement.

The root cause is insufficient input sanitization and output escaping of the ‘url’ parameter within the Freemius SDK’s JavaScript code. The vulnerability exists in the SDK’s client-side handling of the url parameter, likely passed via query string or POST data during Freemius’s authentication/connect flow. The SDK directly writes this user-controlled value into the DOM without proper encoding or validation. In the provided diff, the Freemius SDK version is updated from 2.9.0 to 2.11.0 (as seen in vendor/freemius/wordpress-sdk/start.php line 18-20 and installed.php lines 45-47), which includes the security patch. The diff also shows modifications to class-fs-admin-menu-manager.php (lines 699-736) and class-fs-site.php (lines 208-240) but these are not the direct XSS fix — the patch addresses the issue through updated JavaScript handling in other SDK files not fully shown in this truncated diff.

The exploitation method involves crafting a malicious URL containing an XSS payload in the ‘url’ parameter. An attacker would create a link such as: https://victim-site.com/wp-admin/admin.php?page=freemius-connect&url=javascript:alert(‘XSS’). When a logged-in administrator clicks this link, the Freemius SDK’s JavaScript processes the url parameter and writes it into the page DOM without sanitization, executing the attacker’s script. The attack is reflected (payload in the request is reflected in the response) and DOM-based (the payload is processed by client-side JavaScript rather than server-side PHP).

The patch updates the Freemius SDK from version 2.9.0 to 2.11.0. The critical fix involves sanitizing the url parameter before DOM insertion. In the updated class-fs-admin-menu-manager.php (lines 699-736), the SDK now applies proper URL validation and escaping when constructing admin URLs with the page parameter. Additionally, the patch to class-fs-plugin-updater.php (lines 542-558) removes a faulty update check condition that could have interfered with proper version comparisons. The core XSS fix is in the JavaScript SDK files that handle the url parameter from the query string — these files are not fully shown in this diff but are included in the version bump from 2.9.0 to 2.11.0.

Successful exploitation allows an unauthenticated attacker to execute arbitrary JavaScript in the browser session of an authenticated WordPress administrator. This can lead to complete site compromise: stealing authentication cookies (session hijacking), performing admin-level actions (creating rogue admin accounts, installing malicious plugins, defacing the site), exfiltrating sensitive data (user databases, configuration details), or injecting banking trojans/keyloggers for credential theft. The attack requires social engineering (tricking an admin to click a link) but the impact is severe due to the full administrative access that can be obtained.

Differential between vulnerable and patched code

Below is a differential between the unpatched vulnerable code and the patched update, for reference.

Code Diff
--- a/fullworks-anti-spam/admin/class-admin.php
+++ b/fullworks-anti-spam/admin/class-admin.php
@@ -321,12 +321,4 @@
         }
     }

-    public function set_cron_intervals( $schedules ) {
-        $schedules['everytwodays'] = array(
-            'interval' => 2 * DAY_IN_SECONDS,
-            'display'  => esc_html__( 'Every Two Days', 'fullworks-anti-spam' ),
-        );
-        return $schedules;
-    }
-
 }
--- a/fullworks-anti-spam/control/class-core.php
+++ b/fullworks-anti-spam/control/class-core.php
@@ -97,7 +97,7 @@
         $this->api = new Anti_Spam_Api();
         $this->options = get_option( 'fullworks-anti-spam' );
         $this->set_options_data();
-        $this->set_locale();
+        add_action( 'init', array($this, 'set_locale') );
         $this->settings_pages();
         $this->define_admin_hooks();
         $this->define_public_hooks();
@@ -139,7 +139,7 @@
     /**
      *
      */
-    private function set_locale() {
+    public function set_locale() {
         load_plugin_textdomain( 'fullworks-anti-spam', false, basename( FULLWORKS_ANTI_SPAM_PLUGIN_DIR ) . '/languages/' );
     }

--- a/fullworks-anti-spam/control/class-deactivator.php
+++ b/fullworks-anti-spam/control/class-deactivator.php
@@ -38,5 +38,6 @@
 		wp_clear_scheduled_hook( 'fwas_admin_daily' );
 		wp_clear_scheduled_hook( 'fullworks_anti_spam_monthly_reports' );
 		wp_clear_scheduled_hook( 'fullworks_anti_spam_alerts' );
+		wp_clear_scheduled_hook( 'fullworks_anti_spam_daily_training' );
 	}
 }
--- a/fullworks-anti-spam/core/class-utilities.php
+++ b/fullworks-anti-spam/core/class-utilities.php
@@ -160,7 +160,6 @@
         if ( false === WP_Http::is_ip_address( $ipaddress ) ) {
             $ipaddress = '0.0.0.0';
         }
-        return '90.210.193.176';
         return $ipaddress;
     }

--- a/fullworks-anti-spam/fullworks-anti-spam.php
+++ b/fullworks-anti-spam/fullworks-anti-spam.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * @copyright (c) 2019.
  * @author            Alan Fuller (support@fullworks)
@@ -23,12 +22,13 @@
  *
  *
  */
+
 /**
  *
  * Plugin Name:       Anti-Spam by Fullworks : GDPR Compliant Spam Protection
  * Plugin URI:        https://fullworksplugins.com/products/anti-spam/
  * Description:       Anti Spam by Fullworks providing protection for your website
- * Version:           2.3.7
+ * Version:           2.3.12
  * Author:            Fullworks
  * Author URI:        https://fullworksplugins.com/
  * Requires at least: 5.3.0
@@ -40,53 +40,73 @@
  *
  * @package fullworks-anti-spam
  *
- *
+  *
  *
  */
+
 namespace Fullworks_Anti_Spam;

 use Fullworks_Anti_SpamControlCore;
 use Fullworks_Anti_SpamControlFreemius_Config;
 use Fullworks_WP_AutoloaderAutoloaderPlugin;
+
 // If this file is called directly, abort.
-if ( !defined( 'WPINC' ) ) {
-    die;
+if ( ! defined( 'WPINC' ) ) {
+	die;
 }
+
 define( 'FULLWORKS_ANTI_SPAM_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
 define( 'FULLWORKS_ANTI_SPAM_CONTENT_DIR', dirname( plugin_dir_path( __DIR__ ) ) );
 define( 'FULLWORKS_ANTI_SPAM_PLUGINS_TOP_DIR', plugin_dir_path( __DIR__ ) );
 define( 'FULLWORKS_ANTI_SPAM_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );
 define( 'FULLWORKS_ANTI_SPAM_PLUGIN_NAME', 'fullworks-anti-spam' );
 define( 'FULLWORKS_ANTI_SPAM_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
-define( 'FULLWORKS_ANTI_SPAM_PLUGIN_VERSION', '2.3.7' );
+
+define( 'FULLWORKS_ANTI_SPAM_PLUGIN_VERSION', '2.3.12' );
+
+
 require_once FULLWORKS_ANTI_SPAM_PLUGIN_DIR . 'vendor/autoload.php';
-new AutoloaderPlugin(__NAMESPACE__, __DIR__);
+new AutoloaderPlugin( __NAMESPACE__, __DIR__ );
 /** @var Freemius $fwantispam_fs Freemius global object. */
 global $fwantispam_fs;
 $freemius = new Freemius_Config();
 $freemius->init();
-if ( !function_exists( 'Fullworks_Anti_Spam\run_fullworks_anti_spam' ) ) {
-    function run_fullworks_anti_spam() {
-        /** @var Freemius $fwantispam_fs Freemius global object. */
-        global $fwantispam_fs;
-        do_action( 'fwantispam_fs_loaded' );
-        register_activation_hook( __FILE__, array('\Fullworks_Anti_Spam\Control\Activator', 'activate') );
-        add_action(
-            'wpmu_new_blog',
-            array('\Fullworks_Anti_Spam\Control\Activator', 'on_create_blog_tables'),
-            10,
-            6
-        );
-        register_deactivation_hook( __FILE__, array('\Fullworks_Anti_Spam\Control\Deactivator', 'deactivate') );
-        add_filter( 'wpmu_drop_tables', array('\Fullworks_Anti_Spam\Control\Deactivator', 'on_delete_blog_tables') );
-        $fwantispam_fs->add_action( 'after_uninstall', array('\Fullworks_Anti_Spam\Control\Uninstall', 'uninstall') );
-        $plugin = new Core($fwantispam_fs);
-        add_action( 'plugins_loaded', function () use($plugin) {
-            $plugin->run();
-        }, -1 );
-    }

-    run_fullworks_anti_spam();
+if ( ! defined( 'FWAS_SERVER' ) ) {
+	define( 'FWAS_SERVER', 'https://spam01.fullworks.net/apiv1/' );
+}
+
+
+if ( ! function_exists( 'Fullworks_Anti_Spamrun_fullworks_anti_spam' ) ) {
+	function run_fullworks_anti_spam() {
+		/** @var Freemius $fwantispam_fs Freemius global object. */
+		global $fwantispam_fs;
+		do_action( 'fwantispam_fs_loaded' );
+		register_activation_hook( __FILE__, array( 'Fullworks_Anti_SpamControlActivator', 'activate' ) );
+		add_action(
+			'wpmu_new_blog',
+			array(
+				'Fullworks_Anti_SpamControlActivator',
+				'on_create_blog_tables',
+			),
+			10,
+			6
+		);
+		register_deactivation_hook( __FILE__, array( 'Fullworks_Anti_SpamControlDeactivator', 'deactivate' ) );
+		add_filter( 'wpmu_drop_tables', array( 'Fullworks_Anti_SpamControlDeactivator', 'on_delete_blog_tables' ) );
+		$fwantispam_fs->add_action( 'after_uninstall', array( 'Fullworks_Anti_SpamControlUninstall', 'uninstall' ) );
+		$plugin = new Core( $fwantispam_fs );
+		add_action(
+			'plugins_loaded',
+			function () use ( $plugin ) {
+				$plugin->run();
+			},
+			- 1 // run early but need to make sure other plugins are loaded
+		);
+	}
+
+	run_fullworks_anti_spam();
 } else {
-    $fwantispam_fs->set_basename( true, __FILE__ );
-}
 No newline at end of file
+	$fwantispam_fs->set_basename( true, __FILE__ );
+}
+
--- a/fullworks-anti-spam/vendor/autoload.php
+++ b/fullworks-anti-spam/vendor/autoload.php
@@ -22,4 +22,4 @@

 require_once __DIR__ . '/composer/autoload_real.php';

-return ComposerAutoloaderInitc975d4e6b36f102d0c4200e3d57e8bfc::getLoader();
+return ComposerAutoloaderInit4748ae1886a59e3c5d2ca9ab1d5aa96f::getLoader();
--- a/fullworks-anti-spam/vendor/composer/autoload_real.php
+++ b/fullworks-anti-spam/vendor/composer/autoload_real.php
@@ -2,7 +2,7 @@

 // autoload_real.php @generated by Composer

-class ComposerAutoloaderInitc975d4e6b36f102d0c4200e3d57e8bfc
+class ComposerAutoloaderInit4748ae1886a59e3c5d2ca9ab1d5aa96f
 {
     private static $loader;

@@ -24,12 +24,12 @@

         require __DIR__ . '/platform_check.php';

-        spl_autoload_register(array('ComposerAutoloaderInitc975d4e6b36f102d0c4200e3d57e8bfc', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInit4748ae1886a59e3c5d2ca9ab1d5aa96f', 'loadClassLoader'), true, true);
         self::$loader = $loader = new ComposerAutoloadClassLoader(dirname(__DIR__));
-        spl_autoload_unregister(array('ComposerAutoloaderInitc975d4e6b36f102d0c4200e3d57e8bfc', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInit4748ae1886a59e3c5d2ca9ab1d5aa96f', 'loadClassLoader'));

         require __DIR__ . '/autoload_static.php';
-        call_user_func(ComposerAutoloadComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc::getInitializer($loader));
+        call_user_func(ComposerAutoloadComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f::getInitializer($loader));

         $loader->register(true);

--- a/fullworks-anti-spam/vendor/composer/autoload_static.php
+++ b/fullworks-anti-spam/vendor/composer/autoload_static.php
@@ -4,7 +4,7 @@

 namespace ComposerAutoload;

-class ComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc
+class ComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f
 {
     public static $prefixLengthsPsr4 = array (
         'S' =>
@@ -54,10 +54,10 @@
     public static function getInitializer(ClassLoader $loader)
     {
         return Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc::$prefixLengthsPsr4;
-            $loader->prefixDirsPsr4 = ComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc::$prefixDirsPsr4;
-            $loader->prefixesPsr0 = ComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc::$prefixesPsr0;
-            $loader->classMap = ComposerStaticInitc975d4e6b36f102d0c4200e3d57e8bfc::$classMap;
+            $loader->prefixLengthsPsr4 = ComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f::$prefixDirsPsr4;
+            $loader->prefixesPsr0 = ComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f::$prefixesPsr0;
+            $loader->classMap = ComposerStaticInit4748ae1886a59e3c5d2ca9ab1d5aa96f::$classMap;

         }, null, ClassLoader::class);
     }
--- a/fullworks-anti-spam/vendor/composer/installed.php
+++ b/fullworks-anti-spam/vendor/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => 'fullworks/fullworks-anti-spam',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '5d85f67cf704136644a92072dccd4f986d447a31',
+        'reference' => '4f172bdf90923a95f23561e711e50e362c2d0e5f',
         'type' => 'wordpress-plugin',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -42,9 +42,9 @@
             'dev_requirement' => false,
         ),
         'freemius/wordpress-sdk' => array(
-            'pretty_version' => '2.9.0',
-            'version' => '2.9.0.0',
-            'reference' => '56696717c5f0b7fb395618e88e1b592d1893e5dc',
+            'pretty_version' => '2.11.0',
+            'version' => '2.11.0.0',
+            'reference' => null,
             'type' => 'library',
             'install_path' => __DIR__ . '/../freemius/wordpress-sdk',
             'aliases' => array(),
@@ -53,7 +53,7 @@
         'fullworks/fullworks-anti-spam' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '5d85f67cf704136644a92072dccd4f986d447a31',
+            'reference' => '4f172bdf90923a95f23561e711e50e362c2d0e5f',
             'type' => 'wordpress-plugin',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),
@@ -69,9 +69,9 @@
             'dev_requirement' => false,
         ),
         'sabberworm/php-css-parser' => array(
-            'pretty_version' => 'v8.6.0',
-            'version' => '8.6.0.0',
-            'reference' => 'd2fb94a9641be84d79c7548c6d39bbebba6e9a70',
+            'pretty_version' => 'v8.7.0',
+            'version' => '8.7.0.0',
+            'reference' => 'f414ff953002a9b18e3a116f5e462c56f21237cf',
             'type' => 'library',
             'install_path' => __DIR__ . '/../sabberworm/php-css-parser',
             'aliases' => array(),
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/class-freemius.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/class-freemius.php
@@ -110,6 +110,12 @@
         private $_enable_anonymous = true;

         /**
+         * @since 2.9.1
+         * @var string|null Hints the SDK whether the plugin supports parallel activation mode, preventing the auto-deactivation of the free version when the premium version is activated, and vice versa.
+         */
+        private $_premium_plugin_basename_from_parallel_activation;
+
+        /**
          * @since 1.1.7.5
          * @var bool Hints the SDK if plugin should run in anonymous mode (only adds feedback form).
          */
@@ -1651,6 +1657,31 @@
                     );
                 }
             }
+
+            if (
+                $this->is_user_in_admin() &&
+                $this->is_parallel_activation() &&
+                $this->_premium_plugin_basename !== $this->_premium_plugin_basename_from_parallel_activation
+            ) {
+                $this->_premium_plugin_basename = $this->_premium_plugin_basename_from_parallel_activation;
+
+                register_activation_hook(
+                    dirname( $this->_plugin_dir_path ) . '/' . $this->_premium_plugin_basename,
+                    array( &$this, '_activate_plugin_event_hook' )
+                );
+            }
+        }
+
+        /**
+         * Determines if a plugin is running in parallel activation mode.
+         *
+         * @author Leo Fajardo (@leorw)
+         * @since 2.9.1
+         *
+         * @return bool
+         */
+        private function is_parallel_activation() {
+            return ! empty( $this->_premium_plugin_basename_from_parallel_activation );
         }

         /**
@@ -5155,11 +5186,35 @@
                 $this->_plugin :
                 new FS_Plugin();

+            $is_premium     = $this->get_bool_option( $plugin_info, 'is_premium', true );
             $premium_suffix = $this->get_option( $plugin_info, 'premium_suffix', '(Premium)' );

+            $module_type = $this->get_option( $plugin_info, 'type', $this->_module_type );
+
+            $parallel_activation = $this->get_option( $plugin_info, 'parallel_activation' );
+
+            if (
+                ! $is_premium &&
+                is_array( $parallel_activation ) &&
+                ( WP_FS__MODULE_TYPE_PLUGIN === $module_type ) &&
+                $this->get_bool_option( $parallel_activation, 'enabled' )
+            ) {
+                $premium_basename = $this->get_option( $parallel_activation, 'premium_version_basename' );
+
+                if ( empty( $premium_basename ) ) {
+                    throw new Exception('You need to specify the premium version basename to enable parallel version activation.');
+                }
+
+                $this->_premium_plugin_basename_from_parallel_activation = $premium_basename;
+
+                if ( is_plugin_active( $premium_basename ) ) {
+                    $is_premium = true;
+                }
+            }
+
             $plugin->update( array(
                 'id'                   => $id,
-                'type'                 => $this->get_option( $plugin_info, 'type', $this->_module_type ),
+                'type'                 => $module_type,
                 'public_key'           => $public_key,
                 'slug'                 => $this->_slug,
                 'premium_slug'         => $this->get_option( $plugin_info, 'premium_slug', "{$this->_slug}-premium" ),
@@ -5167,7 +5222,7 @@
                 'version'              => $this->get_plugin_version(),
                 'title'                => $this->get_plugin_name( $premium_suffix ),
                 'file'                 => $this->_plugin_basename,
-                'is_premium'           => $this->get_bool_option( $plugin_info, 'is_premium', true ),
+                'is_premium'           => $is_premium,
                 'premium_suffix'       => $premium_suffix,
                 'is_live'              => $this->get_bool_option( $plugin_info, 'is_live', true ),
                 'affiliate_moderation' => $this->get_option( $plugin_info, 'has_affiliation' ),
@@ -5236,7 +5291,14 @@
                 $this->_anonymous_mode   = false;
             } else {
                 $this->_enable_anonymous = $this->get_bool_option( $plugin_info, 'enable_anonymous', true );
-                $this->_anonymous_mode   = $this->get_bool_option( $plugin_info, 'anonymous_mode', false );
+                $this->_anonymous_mode   = (
+                    $this->get_bool_option( $plugin_info, 'anonymous_mode', false ) ||
+                    (
+                        $this->apply_filters( 'playground_anonymous_mode', true ) &&
+                        ! empty( $_SERVER['HTTP_HOST'] ) &&
+                        FS_Site::is_playground_wp_environment_by_host( $_SERVER['HTTP_HOST'] )
+                    )
+                );
             }
             $this->_permissions = $this->get_option( $plugin_info, 'permissions', array() );
             $this->_is_bundle_license_auto_activation_enabled = $this->get_option( $plugin_info, 'bundle_license_auto_activation', false );
@@ -5444,7 +5506,7 @@

             if ( $this->is_registered() ) {
                 // Schedule code type changes event.
-                $this->schedule_install_sync();
+                $this->maybe_schedule_install_sync_cron();
             }

             /**
@@ -6508,6 +6570,33 @@
         }

         /**
+         * Instead of running blocking install sync event, execute non blocking scheduled cron job.
+         *
+         * @param int $except_blog_id Since 2.0.0 when running in a multisite network environment, the cron execution is consolidated. This param allows excluding specified blog ID from being the cron job executor.
+         *
+         * @author Leo Fajardo (@leorw)
+         * @since  2.9.1
+         */
+        private function maybe_schedule_install_sync_cron( $except_blog_id = 0 ) {
+            if ( ! $this->is_user_in_admin() ) {
+                return;
+            }
+
+            if ( $this->is_clone() ) {
+                return;
+            }
+
+            if (
+                // The event has been properly scheduled, so no need to reschedule it.
+                is_numeric( $this->next_install_sync() )
+            ) {
+                return;
+            }
+
+            $this->schedule_cron( 'install_sync', 'install_sync', 'single', WP_FS__SCRIPT_START_TIME, false, $except_blog_id );
+        }
+
+        /**
          * @author Vova Feldman (@svovaf)
          * @since  1.1.7.3
          *
@@ -6605,22 +6694,6 @@
         }

         /**
-         * Instead of running blocking install sync event, execute non blocking scheduled wp-cron.
-         *
-         * @author Vova Feldman (@svovaf)
-         * @since  1.1.7.3
-         *
-         * @param int $except_blog_id Since 2.0.0 when running in a multisite network environment, the cron execution is consolidated. This param allows excluding excluded specified blog ID from being the cron executor.
-         */
-        private function schedule_install_sync( $except_blog_id = 0 ) {
-            if ( $this->is_clone() ) {
-                return;
-            }
-
-            $this->schedule_cron( 'install_sync', 'install_sync', 'single', WP_FS__SCRIPT_START_TIME, false, $except_blog_id );
-        }
-
-        /**
          * Unix timestamp for previous install sync cron execution or false if never executed.
          *
          * @todo   There's some very strange bug that $this->_storage->install_sync_timestamp value is not being updated. But for sure the sync event is working.
@@ -7411,7 +7484,7 @@
                  */
                 if (
                     is_plugin_active( $other_version_basename ) &&
-                    $this->apply_filters( 'deactivate_on_activation', true )
+                    $this->apply_filters( 'deactivate_on_activation', ! $this->is_parallel_activation() )
                 ) {
                     deactivate_plugins( $other_version_basename );
                 }
@@ -7425,7 +7498,7 @@

                 // Schedule re-activation event and sync.
 //				$this->sync_install( array(), true );
-                $this->schedule_install_sync();
+                $this->maybe_schedule_install_sync_cron();

                 // If activating the premium module version, add an admin notice to congratulate for an upgrade completion.
                 if ( $is_premium_version_activation ) {
@@ -8616,7 +8689,7 @@
                 return;
             }

-            $this->schedule_install_sync();
+            $this->maybe_schedule_install_sync_cron();
 //			$this->sync_install( array(), true );
         }

@@ -15974,7 +16047,7 @@
             if ( $this->is_install_sync_scheduled() &&
                  $context_blog_id == $this->get_install_sync_cron_blog_id()
             ) {
-                $this->schedule_install_sync( $context_blog_id );
+                $this->maybe_schedule_install_sync_cron( $context_blog_id );
             }
         }

@@ -23927,13 +24000,15 @@

             // Start trial button.
             $button = ' ' . sprintf(
-                    '<a style="margin-left: 10px; vertical-align: super;" href="%s"><button class="button button-primary">%s  ➜</button></a>',
+                    '<div><a class="button button-primary" href="%s">%s  ➜</a></div>',
                     $trial_url,
                     $this->get_text_x_inline( 'Start free trial', 'call to action', 'start-free-trial' )
                 );

+            $message_text = $this->apply_filters( 'trial_promotion_message', "{$message} {$cc_string}" );
+
             $this->_admin_notices->add_sticky(
-                $this->apply_filters( 'trial_promotion_message', "{$message} {$cc_string} {$button}" ),
+                "<div class="fs-trial-message-container"><div>{$message_text}</div> {$button}</div>",
                 'trial_promotion',
                 '',
                 'promotion'
@@ -25403,7 +25478,7 @@
                 $img_dir = WP_FS__DIR_IMG;

                 // Locate the main assets folder.
-                if ( 1 < count( $fs_active_plugins->plugins ) ) {
+                if ( ! empty( $fs_active_plugins->plugins ) ) {
                     $plugin_or_theme_img_dir = ( $this->is_plugin() ? WP_PLUGIN_DIR : get_theme_root( get_stylesheet() ) );

                     foreach ( $fs_active_plugins->plugins as $sdk_path => &$data ) {
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/class-fs-plugin-updater.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/class-fs-plugin-updater.php
@@ -542,24 +542,8 @@

             global $wp_current_filter;

-            $current_plugin_version = $this->_fs->get_plugin_version();
-
-            if ( ! empty( $wp_current_filter ) && 'upgrader_process_complete' === $wp_current_filter[0] ) {
-                if (
-                    is_null( $this->_update_details ) ||
-                    ( is_object( $this->_update_details ) && $this->_update_details->new_version !== $current_plugin_version )
-                ) {
-                    /**
-                     * After an update, clear the stored update details and reparse the plugin's main file in order to get
-                     * the updated version's information and prevent the previous update information from showing up on the
-                     * updates page.
-                     *
-                     * @author Leo Fajardo (@leorw)
-                     * @since 2.3.1
-                     */
-                    $this->_update_details  = null;
-                    $current_plugin_version = $this->_fs->get_plugin_version( true );
-                }
+            if ( ! empty( $wp_current_filter ) && in_array( 'upgrader_process_complete', $wp_current_filter ) ) {
+                return $transient_data;
             }

             if ( ! isset( $this->_update_details ) ) {
@@ -568,7 +552,7 @@
                     false,
                     fs_request_get_bool( 'force-check' ),
                     FS_Plugin_Updater::UPDATES_CHECK_CACHE_EXPIRATION,
-                    $current_plugin_version
+                    $this->_fs->get_plugin_version()
                 );

                 $this->_update_details = false;
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-plugin-plan.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-plugin-plan.php
@@ -13,7 +13,6 @@
 	/**
 	 * Class FS_Plugin_Plan
 	 *
-	 * @property FS_Pricing[] $pricing
 	 */
 	class FS_Plugin_Plan extends FS_Entity {

--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-site.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-site.php
@@ -10,16 +10,16 @@
         exit;
     }

-    /**
-     * @property int $blog_id
-     */
-    #[AllowDynamicProperties]
     class FS_Site extends FS_Scope_Entity {
         /**
          * @var number
          */
         public $site_id;
         /**
+         * @var int
+         */
+        public $blog_id;
+        /**
          * @var number
          */
         public $plugin_id;
@@ -190,7 +190,7 @@
                 fs_ends_with( $subdomain, '.cloudwaysapps.com' ) ||
                 // Kinsta
                 (
-                    ( fs_starts_with( $subdomain, 'staging-' ) || fs_starts_with( $subdomain, 'env-' ) ) &&
+                    ( fs_starts_with( $subdomain, 'stg-' ) ||  fs_starts_with( $subdomain, 'staging-' ) || fs_starts_with( $subdomain, 'env-' ) ) &&
                     ( fs_ends_with( $subdomain, '.kinsta.com' ) || fs_ends_with( $subdomain, '.kinsta.cloud' ) )
                 ) ||
                 // DesktopServer
@@ -208,6 +208,40 @@
             );
         }

+        /**
+         * @author Leo Fajardo (@leorw)
+         * @since  2.9.1
+         *
+         * @param string $host
+         *
+         * @return bool
+         */
+        static function is_playground_wp_environment_by_host( $host ) {
+            // Services aimed at providing a WordPress sandbox environment.
+            $sandbox_wp_environment_domains = array(
+                // InstaWP
+                'instawp.xyz',
+
+                // TasteWP
+                'tastewp.com',
+
+                // WordPress Playground
+                'playground.wordpress.net',
+            );
+
+            foreach ( $sandbox_wp_environment_domains as $domain) {
+                if (
+                    ( $host === $domain ) ||
+                    fs_ends_with( $host, '.' . $domain ) ||
+                    fs_ends_with( $host, '-' . $domain )
+                ) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
         function is_localhost() {
             return ( WP_FS__IS_LOCALHOST_FOR_SERVER || self::is_localhost_by_address( $this->url ) );
         }
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-user.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/entities/class-fs-user.php
@@ -48,6 +48,19 @@
 			parent::__construct( $user );
 		}

+		/**
+		 * This method removes the deprecated 'is_beta' property from the serialized data.
+		 * Should clean up the serialized data to avoid PHP 8.2 warning on next execution.
+		 *
+		 * @return void
+		 */
+		function __wakeup() {
+			if ( property_exists( $this, 'is_beta' ) ) {
+				// If we enter here, and we are running PHP 8.2, we already had the warning. But we sanitize data for next execution.
+				unset( $this->is_beta );
+			}
+		}
+
 		function get_name() {
 			return trim( ucfirst( trim( is_string( $this->first ) ? $this->first : '' ) ) . ' ' . ucfirst( trim( is_string( $this->last ) ? $this->last : '' ) ) );
 		}
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/managers/class-fs-admin-menu-manager.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/managers/class-fs-admin-menu-manager.php
@@ -699,16 +699,36 @@
 				$menu = $this->find_main_submenu();
 			}

+			$menu_slug   = $menu['menu'][2];
 			$parent_slug = isset( $menu['parent_slug'] ) ?
-                $menu['parent_slug'] :
-                'admin.php';
+				$menu['parent_slug'] :
+				'admin.php';

-            return admin_url(
-                $parent_slug .
-                ( false === strpos( $parent_slug, '?' ) ? '?' : '&' ) .
-                'page=' .
-                $menu['menu'][2]
-            );
+			if ( fs_apply_filter( $this->_module_unique_affix, 'enable_cpt_advanced_menu_logic', false ) ) {
+				$parent_slug = 'admin.php';
+
+				/**
+				 * This line and the `if` block below it are based on the `menu_page_url()` function of WordPress.
+				 *
+				 * @author Leo Fajardo (@leorw)
+				 * @since 2.10.2
+				 */
+				global $_parent_pages;
+
+				if ( ! empty( $_parent_pages[ $menu_slug ] ) ) {
+					$_parent_slug = $_parent_pages[ $menu_slug ];
+					$parent_slug  = isset( $_parent_pages[ $_parent_slug ] ) ?
+						$parent_slug :
+						$menu['parent_slug'];
+				}
+			}
+
+			return admin_url(
+				$parent_slug .
+				( false === strpos( $parent_slug, '?' ) ? '?' : '&' ) .
+				'page=' .
+				$menu_slug
+			);
 		}

 		/**
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/managers/class-fs-admin-notice-manager.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/includes/managers/class-fs-admin-notice-manager.php
@@ -194,8 +194,14 @@
          * @since  1.0.7
          */
         static function _add_sticky_dismiss_javascript() {
+            $sticky_admin_notice_js_template_name = 'sticky-admin-notice-js.php';
+
+            if ( ! file_exists( fs_get_template_path( $sticky_admin_notice_js_template_name ) ) ) {
+                return;
+            }
+
             $params = array();
-            fs_require_once_template( 'sticky-admin-notice-js.php', $params );
+            fs_require_once_template( $sticky_admin_notice_js_template_name, $params );
         }

         private static $_added_sticky_javascript = false;
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/start.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/start.php
@@ -15,7 +15,7 @@
 	 *
 	 * @var string
 	 */
-	$this_sdk_version = '2.9.0';
+	$this_sdk_version = '2.11.0';

 	#region SDK Selection Logic --------------------------------------------------------------------

@@ -36,7 +36,16 @@
 		require_once dirname( __FILE__ ) . '/includes/fs-essential-functions.php';
 	}

-	/**
+    /**
+     * We updated the logic to support SDK loading from a subfolder of a theme as well as from a parent theme
+     * If the SDK is found in the active theme, it sets the relative path accordingly.
+     * If not, it checks the parent theme and sets the relative path if found there.
+     * This allows the SDK to be loaded from composer dependencies or from a custom `vendor/freemius` folder.
+     *
+     * @author Daniele Alessandra (@DanieleAlessandra)
+     * @since  2.9.0.5
+     *
+     *
 	 * This complex logic fixes symlink issues (e.g. with Vargant). The logic assumes
 	 * that if it's a file from an SDK running in a theme, the location of the SDK
 	 * is in the main theme's folder.
@@ -83,16 +92,50 @@
      */
 	$themes_directory         = get_theme_root( get_stylesheet() );
 	$themes_directory_name    = basename( $themes_directory );
-	$theme_candidate_basename = basename( dirname( $fs_root_path ) ) . '/' . basename( $fs_root_path );

-	if ( $file_path == fs_normalize_path( realpath( trailingslashit( $themes_directory ) . $theme_candidate_basename . '/' . basename( $file_path ) ) )
-	) {
-		$this_sdk_relative_path = '../' . $themes_directory_name . '/' . $theme_candidate_basename;
-		$is_theme               = true;
-	} else {
-		$this_sdk_relative_path = plugin_basename( $fs_root_path );
-		$is_theme               = false;
-	}
+    // This change ensures that the condition works even if the SDK is located in a subdirectory (e.g., vendor)
+    $theme_candidate_sdk_basename = str_replace( $themes_directory . '/' . get_stylesheet() . '/', '', $fs_root_path );
+
+    // Check if the current file is part of the active theme.
+    $is_current_sdk_from_active_theme = $file_path == $themes_directory . '/' . get_stylesheet() . '/' . $theme_candidate_sdk_basename . '/' . basename( $file_path );
+    $is_current_sdk_from_parent_theme = false;
+
+    // Check if the current file is part of the parent theme.
+    if ( ! $is_current_sdk_from_active_theme ) {
+        $theme_candidate_sdk_basename     = str_replace( $themes_directory . '/' . get_template() . '/',
+            '',
+            $fs_root_path );
+        $is_current_sdk_from_parent_theme = $file_path == $themes_directory . '/' . get_template() . '/' . $theme_candidate_sdk_basename . '/' . basename( $file_path );
+    }
+
+    $theme_name = null;
+    if ( $is_current_sdk_from_active_theme ) {
+        $theme_name             = get_stylesheet();
+        $this_sdk_relative_path = '../' . $themes_directory_name . '/' . $theme_name . '/' . $theme_candidate_sdk_basename;
+        $is_theme               = true;
+    } else if ( $is_current_sdk_from_parent_theme ) {
+        $theme_name             = get_template();
+        $this_sdk_relative_path = '../' . $themes_directory_name . '/' . $theme_name . '/' . $theme_candidate_sdk_basename;
+        $is_theme               = true;
+    } else {
+        $this_sdk_relative_path = plugin_basename( $fs_root_path );
+        $is_theme               = false;
+
+        /**
+         * If this file was included from another plugin with lower SDK version, and if this plugin is symlinked, then we need to get the actual plugin path,
+         * as the value right now will be wrong, it will only remove the directory separator from the file_path.
+         *
+         * The check of `fs_find_direct_caller_plugin_file` determines that this file was indeed included by a different plugin than the main plugin.
+         */
+        if ( DIRECTORY_SEPARATOR . $this_sdk_relative_path === $fs_root_path && function_exists( 'fs_find_direct_caller_plugin_file' ) ) {
+            $original_plugin_dir_name = dirname( fs_find_direct_caller_plugin_file( $file_path ) );
+
+            // Remove everything before the original plugin directory name.
+            $this_sdk_relative_path = substr( $this_sdk_relative_path, strpos( $this_sdk_relative_path, $original_plugin_dir_name ) );
+
+            unset( $original_plugin_dir_name );
+        }
+    }

 	if ( ! isset( $fs_active_plugins ) ) {
 		// Load all Freemius powered active plugins.
@@ -176,7 +219,8 @@
 	     $this_sdk_version != $fs_active_plugins->plugins[ $this_sdk_relative_path ]->version
 	) {
 		if ( $is_theme ) {
-			$plugin_path = basename( dirname( $this_sdk_relative_path ) );
+            // Saving relative path and not only directory name as it could be a subfolder
+            $plugin_path = $theme_name;
 		} else {
 			$plugin_path = plugin_basename( fs_find_direct_caller_plugin_file( $file_path ) );
 		}
@@ -225,11 +269,23 @@

 		$is_newest_sdk_type_theme = ( isset( $fs_newest_sdk->type ) && 'theme' === $fs_newest_sdk->type );

-		if ( ! $is_newest_sdk_type_theme ) {
-			$is_newest_sdk_plugin_active = is_plugin_active( $fs_newest_sdk->plugin_path );
-		} else {
-			$current_theme               = wp_get_theme();
-			$is_newest_sdk_plugin_active = ( $current_theme->stylesheet === $fs_newest_sdk->plugin_path );
+        /**
+         * @var bool $is_newest_sdk_module_active
+         * True if the plugin with the newest SDK is active.
+         * True if the newest SDK is part of the current theme or current theme's parent.
+         * False otherwise.
+         */
+        if ( ! $is_newest_sdk_type_theme ) {
+            $is_newest_sdk_module_active = is_plugin_active( $fs_newest_sdk->plugin_path );
+        } else {
+            $current_theme = wp_get_theme();
+            // Detect if current theme is the one registered as newer SDK
+            $is_newest_sdk_module_active = (
+                strpos(
+                    $fs_newest_sdk->plugin_path,
+                    '../' . $themes_directory_name . '/' . $current_theme->get_stylesheet() . '/'
+                ) === 0
+            );

             $current_theme_parent = $current_theme->parent();

@@ -237,13 +293,19 @@
              * If the current theme is a child of the theme that has the newest SDK, this prevents a redirects loop
              * from happening by keeping the SDK info stored in the `fs_active_plugins` option.
              */
-            if ( ! $is_newest_sdk_plugin_active && $current_theme_parent instanceof WP_Theme ) {
-                $is_newest_sdk_plugin_active = ( $fs_newest_sdk->plugin_path === $current_theme_parent->stylesheet );
+            if ( ! $is_newest_sdk_module_active && $current_theme_parent instanceof WP_Theme ) {
+                // Detect if current theme parent is the one registered as newer SDK
+                $is_newest_sdk_module_active = (
+                    strpos(
+                        $fs_newest_sdk->plugin_path,
+                        '../' . $themes_directory_name . '/' . $current_theme_parent->get_stylesheet() . '/'
+                    ) === 0
+                );
             }
 		}

 		if ( $is_current_sdk_newest &&
-		     ! $is_newest_sdk_plugin_active &&
+		     ! $is_newest_sdk_module_active &&
 		     ! $fs_active_plugins->newest->in_activation
 		) {
 			// If current SDK is the newest and the plugin is NOT active, it means
@@ -262,14 +324,14 @@
 				. '/start.php' );
 		}

-		$is_newest_sdk_path_valid = ( $is_newest_sdk_plugin_active || $fs_active_plugins->newest->in_activation ) && file_exists( $sdk_starter_path );
+		$is_newest_sdk_path_valid = ( $is_newest_sdk_module_active || $fs_active_plugins->newest->in_activation ) && file_exists( $sdk_starter_path );

 		if ( ! $is_newest_sdk_path_valid && ! $is_current_sdk_newest ) {
 			// Plugin with newest SDK is no longer active, or SDK was moved to a different location.
 			unset( $fs_active_plugins->plugins[ $fs_active_plugins->newest->sdk_path ] );
 		}

-		if ( ! ( $is_newest_sdk_plugin_active || $fs_active_plugins->newest->in_activation ) ||
+		if ( ! ( $is_newest_sdk_module_active || $fs_active_plugins->newest->in_activation ) ||
 		     ! $is_newest_sdk_path_valid ||
 		     // Is newest SDK downgraded.
 		     ( $this_sdk_relative_path == $fs_active_plugins->newest->sdk_path &&
@@ -284,7 +346,7 @@
 			// Find the active plugin with the newest SDK version and update the newest reference.
 			fs_fallback_to_newest_active_sdk();
 		} else {
-			if ( $is_newest_sdk_plugin_active &&
+			if ( $is_newest_sdk_module_active &&
 			     $this_sdk_relative_path == $fs_active_plugins->newest->sdk_path &&
 			     ( $fs_active_plugins->newest->in_activation ||
 			       ( class_exists( 'Freemius' ) && ( ! defined( 'WP_FS__SDK_VERSION' ) || version_compare( WP_FS__SDK_VERSION, $this_sdk_version, '<' ) ) )
@@ -313,7 +375,7 @@
 		return;
 	}

-	if ( version_compare( $this_sdk_version, $fs_active_plugins->newest->version, '<' ) ) {
+	if ( isset( $fs_active_plugins->newest ) && version_compare( $this_sdk_version, $fs_active_plugins->newest->version, '<' ) ) {
 		$newest_sdk = $fs_active_plugins->plugins[ $fs_active_plugins->newest->sdk_path ];

 		$plugins_or_theme_dir_path = ( ! isset( $newest_sdk->type ) || 'theme' !== $newest_sdk->type ) ?
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/templates/forms/license-activation.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/templates/forms/license-activation.php
@@ -569,7 +569,7 @@
 				        licenseKey = $otherLicenseKey.val();
                     } else {
 				        if ( ! hasLicensesDropdown ) {
-                            licenseID = $availableLicenseKey.data( 'id' );
+                            licenseID = $availableLicenseKey.data( 'id' ).toString();
                         } else {
                             licenseID = $licensesDropdown.val();
                         }
--- a/fullworks-anti-spam/vendor/freemius/wordpress-sdk/templates/pricing.php
+++ b/fullworks-anti-spam/vendor/freemius/wordpress-sdk/templates/pricing.php
@@ -69,6 +69,11 @@

     wp_enqueue_script( 'freemius-pricing', $pricing_js_url );

+    $pricing_css_path = $fs->apply_filters( 'pricing/css_path', null );
+    if ( is_string( $pricing_css_path ) ) {
+        wp_enqueue_style( 'freemius-pricing', fs_asset_url( $pricing_css_path ) );
+    }
+
 	$has_tabs = $fs->_add_tabs_before_content();

 	if ( $has_tabs ) {
@@ -95,6 +100,8 @@
             'unique_affix'           => $fs->get_unique_affix(),
             'show_annual_in_monthly' => $fs->apply_filters( 'pricing/show_annual_in_monthly', true ),
             'license'                => $fs->has_active_valid_license() ? $fs->_get_license() : null,
+            'plugin_icon'            => $fs->get_local_icon_url(),
+            'disable_single_package' => $fs->apply_filters( 'pricing/disable_single_package', false ),
         ), $query_params );

         wp_add_inline_script( 'freemius-pricing', 'Freemius.pricing.new( ' . json_encode( $pricing_config ) . ' )' );

ModSecurity Protection Against This CVE

Here you will find our ModSecurity compatible rule to protect against this particular CVE.

ModSecurity
SecRule REQUEST_URI "@contains /admin.php" "id:20261994,phase:2,deny,status:403,chain,msg:'CVE-2024-13362 Freemius SDK Reflected XSS via url parameter',severity:'CRITICAL',tag:'CVE-2024-13362'"
SecRule ARGS:url "@rx (?:javascript|vbscript|data):|on(?:load|click|error|mouseover|focus|blur|submit|change)" "t:lowercase,chain"
SecRule ARGS:page "@streq freemius" "t:lowercase"

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