CVE-2025-12814 Overview
CVE-2025-12814 affects the SiteSEO – SEO Simplified plugin for WordPress through version 1.3.2. The plugin exposes the siteseo_reset_settings AJAX function without an adequate capability check. Authenticated users granted any single SiteSEO setting capability can reset the plugin's entire configuration. The flaw is categorized as broken access control [CWE-285] and impacts data integrity on affected sites.
Critical Impact
Authenticated attackers with minimal SiteSEO permissions can reset plugin settings, disrupting site SEO configuration and search visibility.
Affected Products
- SiteSEO – SEO Simplified plugin for WordPress, all versions up to and including 1.3.2
- WordPress sites where the SiteSEO plugin is installed and activated
- Environments where non-administrative users hold any SiteSEO setting capability
Discovery Timeline
- 2025-11-19 - CVE-2025-12814 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-12814
Vulnerability Analysis
The SiteSEO plugin registers an AJAX handler that executes siteseo_reset_settings to restore plugin configuration to defaults. The handler validates that the caller is authenticated and holds one of several SiteSEO capabilities, but it does not restrict the reset action to administrators or to users with the specific capability required for destructive configuration changes.
As a result, any authenticated user who has been granted access to at least one SiteSEO setting capability can invoke the reset endpoint. This produces an integrity impact on the plugin's stored configuration without requiring user interaction or elevated privileges beyond the initial capability grant. The vulnerability does not expose confidential data and does not affect availability of the underlying WordPress instance.
Root Cause
The root cause is an incorrect capability check in the AJAX handler defined in main/ajax.php. The function verifies that the caller has a SiteSEO capability rather than the specific capability that should be required to reset all plugin settings. This maps to [CWE-285] Improper Authorization.
Attack Vector
Exploitation requires an authenticated session on the target WordPress site with at least one SiteSEO capability. The attacker sends a crafted POST request to the WordPress admin-ajax.php endpoint targeting the siteseo_reset_settings action along with a valid nonce obtained from any accessible SiteSEO admin screen. Upon execution, plugin options are reverted to defaults. See the WordPress Plugin Code Review for the vulnerable handler source.
Detection Methods for CVE-2025-12814
Indicators of Compromise
- Unexpected POST requests to /wp-admin/admin-ajax.php with action=siteseo_reset_settings originating from non-administrator accounts
- SiteSEO plugin options reverting to defaults without a corresponding change record from an administrator
- WordPress audit logs showing SiteSEO configuration writes from low-privileged users
Detection Strategies
- Monitor web server access logs for AJAX calls invoking the siteseo_reset_settings action and correlate with the requesting user role
- Alert on WordPress option changes to siteseo_options performed outside of administrator sessions
- Compare plugin configuration snapshots on a scheduled basis to identify unauthorized resets
Monitoring Recommendations
- Enable WordPress activity logging plugins to capture AJAX actions, user IDs, and role context
- Forward WordPress and web server logs to a centralized SIEM for correlation and retention
- Baseline normal SiteSEO administrative activity so anomalous reset events surface quickly
How to Mitigate CVE-2025-12814
Immediate Actions Required
- Update the SiteSEO – SEO Simplified plugin to a version later than 1.3.2 once released by the vendor
- Review WordPress user roles and revoke SiteSEO capabilities from users who do not require them
- Back up the current SiteSEO configuration so it can be restored if an unauthorized reset occurs
Patch Information
Refer to the WordPress Plugin Changeset and the Wordfence Vulnerability Report for the vendor's fix details and remediation guidance. Apply the fixed plugin release via the WordPress plugin manager or WP-CLI as soon as it is available.
Workarounds
- Restrict SiteSEO setting capabilities to administrator-level accounts only until the plugin is patched
- Deploy a web application firewall rule blocking non-administrator requests to admin-ajax.php with action=siteseo_reset_settings
- Temporarily deactivate the SiteSEO plugin on sites where low-privileged users hold SiteSEO capabilities and cannot be restricted
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
