Atomic Edge analysis of CVE-2026-65536 (metadata-based): This vulnerability is a Cross-Site Request Forgery (CSRF) flaw found in the افزونه حمل و نقل ووکامرس | پست پیشتاز، تیپاکس و پیک موتوری plugin (slug: persian-woocommerce-shipping) for WordPress, affecting versions up to and including 4.4.5. The CVSS score is 4.3 (medium), with a vector of AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N, which means an unauthenticated attacker can trick a site administrator into performing a state-changing action without their consent. The vulnerability resides in a function that lacks proper nonce validation, leaving it open to forged requests.
Root Cause: The root cause is the missing or incorrect nonce validation on a function within the plugin, which is confirmed by the CVE description and aligned with CWE-352 (Cross-Site Request Forgery). Atomic Edge analysis infers that the affected function is likely an admin-level handler, such as an Ajax callback, an admin-post action, or a settings form submission, which performs state-changing operations (e.g., updating options, saving shipping settings, or toggling plugin features). Since WordPress core already recommends adding a nonce check in every form and Ajax request that performs state changes, the absence or incorrect implementation allows attackers to forge requests that appear legitimate to the server. No code diff is available, so we cannot confirm the exact function name or parameters, but the plugin name and the typical purpose of such a shipping plugin strongly suggest the vulnerability affects shipping rate or configuration settings.
Exploitation: An attacker crafts a malicious link or HTML page containing a forged request to the vulnerable endpoint. The endpooint is likely either /wp-admin/admin-post.php or /wp-admin/admin-ajax.php, with an action parameter corresponding to the plugin’s internal handler (e.g., action=save_shipping_settings or action=update_shipping_options, guessed based on typical plugin implementation). Since there is no nonce validation, the forged request does not need to include a nonce. If the request is a POST, the attacker can auto-submit a form via JavaScript. If the vulnerable action accepts GET, a simple link can trigger the CSRF. The attack requires the victim to be logged in as an administrator and to click on the malicious link or visit a page with the auto-submitting form. The forged request would execute the state-changing function with the attacker’s chosen parameters, such as disabling a shipping method or changing business addresses.
Remediation: The fix requires adding proper CSRF protection to all state-changing functions. Specifically, the plugin should verify a valid nonce before processing any form submission or Ajax request. Developers should use functions like wp_nonce_field() (for forms), wp_create_nonce() (for URLs), and check_ajax_referer() or check_admin_referer() (for server-side verification). Additionally, they should enforce capability checks (e.g., current_user_can(‘manage_options’)) to ensure only authorized users can trigger such actions. The plugin should also follow WordPress coding standards by using admin-post.php for admin actions or registering Ajax actions with proper nonce checks. Since no patched version is available at the time of writing, administrators should temporarily disable the plugin or apply a virtual patch until a fix is released.
Impact: Successful exploitation allows an unauthenticated attacker to perform unauthorized actions on the WordPress site, but only if they can trick an administrator into submitting the forged request. The impact is limited to integrity loss (rated as low in the CVSS vector), meaning the attacker could alter shipping settings, disable shipping methods, or change configuration data. This could disrupt the site’s shipping functionality and lead to reduced trust or revenue loss, but it does not directly lead to privilege escalation or remote code execution. Combined with other weaknesses, such as missing capability checks, the impact could be more severe, but based on the CVE metadata, the direct impact is moderate.
