CVE-2025-6813 Overview
CVE-2025-6813 is a privilege escalation vulnerability in the aapanel WP Toolkit plugin for WordPress. The flaw resides in the auto_login() function across versions 1.0 through 1.1 and stems from missing authorization checks [CWE-862]. Authenticated attackers with Subscriber-level access or higher can bypass all role validation and obtain full administrator privileges on the affected WordPress site. Successful exploitation grants complete control over site content, users, plugins, and underlying configurations exposed through the WordPress admin interface.
Critical Impact
Any authenticated user, including low-privileged Subscribers, can escalate to administrator and take over the WordPress instance.
Affected Products
- aapanel WP Toolkit plugin for WordPress version 1.0
- aapanel WP Toolkit plugin for WordPress version 1.1
- WordPress sites running vulnerable versions of the aapanel WP Toolkit plugin
Discovery Timeline
- 2025-07-18 - CVE-2025-6813 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-6813
Vulnerability Analysis
The vulnerability resides in the auto_login() function of the aapanel WP Toolkit plugin, defined in class-aapanel-wp-toolkit-agent.php. The function provides an automatic login mechanism intended for privileged management operations. However, the implementation does not perform any capability or role verification before establishing an authenticated session as an administrator. Any authenticated user can reach the endpoint that invokes auto_login() and inherit administrator-level access. The flaw is categorized as Missing Authorization [CWE-862] and applies to all installations of versions 1.0 and 1.1.
Root Cause
The root cause is the absence of current_user_can() checks and nonce validation around the auto_login() handler. WordPress relies on capability checks to gate privileged actions, but the plugin author exposed the login routine without verifying the caller's role. Because Subscriber accounts are routinely created through open registration on many WordPress sites, the authentication barrier is minimal in practice.
Attack Vector
Exploitation requires only an authenticated Subscriber-level account on the target site. The attacker sends a request to the plugin endpoint that triggers auto_login(). The function returns an authenticated session bound to an administrator account without validating the requester's existing privileges. The attacker then uses the elevated session to install malicious plugins, modify themes, create new administrators, or stage further code execution. Refer to the WordPress Plugin Code Review and the Wordfence Vulnerability Report for source-level analysis.
Detection Methods for CVE-2025-6813
Indicators of Compromise
- Unexpected creation of new administrator accounts or role changes from Subscriber to Administrator in wp_users and wp_usermeta tables.
- HTTP requests to aapanel WP Toolkit plugin endpoints from low-privileged user sessions.
- Installation of unfamiliar plugins or themes immediately following Subscriber-level authentication events.
- Modifications to wp-config.php, .htaccess, or PHP files in wp-content/ shortly after plugin endpoint access.
Detection Strategies
- Audit WordPress access logs for requests targeting aapanel-wp-toolkit paths originating from non-administrative session cookies.
- Monitor the WordPress audit trail for user_register, set_user_role, and add_user_to_blog actions correlated with plugin endpoint activity.
- Alert on cookie reuse where the same browser session transitions from a Subscriber capability set to administrative actions within a short time window.
Monitoring Recommendations
- Centralize WordPress and web server logs in a SIEM and create correlation rules for privilege transitions tied to plugin URLs.
- Track plugin inventory and version data across managed WordPress sites to identify hosts still running aapanel WP Toolkit 1.0 or 1.1.
- Enable file integrity monitoring on wp-content/plugins/aapanel-wp-toolkit/ and core WordPress files to detect tampering after exploitation.
How to Mitigate CVE-2025-6813
Immediate Actions Required
- Update the aapanel WP Toolkit plugin to a version later than 1.1 that addresses the missing authorization check, or deactivate and remove the plugin until a fix is verified.
- Audit all WordPress user accounts and remove unauthorized administrator accounts created since the plugin was installed.
- Force a password reset and session invalidation for all users, particularly any account that held Subscriber-level access.
- Review installed plugins, themes, and uploaded files for backdoors introduced through abused administrator privileges.
Patch Information
No fixed version is listed in the NVD entry at the time of writing. Versions 1.0 and 1.1 are confirmed vulnerable. Consult the WordPress Plugin Developer Info page for the latest release information and the Wordfence Vulnerability Report for remediation status.
Workarounds
- Disable open user registration in WordPress (Settings → General → Membership) to prevent attackers from obtaining a Subscriber account.
- Restrict access to the plugin's endpoints at the web server or WAF layer until an updated version is deployed.
- Remove the aapanel WP Toolkit plugin directory entirely if the management functionality is not in active use.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
