CVE-2026-22462 Overview
A Cross-Site Request Forgery (CSRF) vulnerability has been discovered in the Add Polylang support for Customizer WordPress plugin developed by richardevcom. This vulnerability allows attackers to perform unauthorized actions by tricking authenticated users into executing unintended requests. CSRF attacks exploit the trust that a website has in a user's browser, enabling malicious actors to submit forged requests that appear legitimate.
Critical Impact
Attackers can exploit this CSRF vulnerability to perform unauthorized actions on behalf of authenticated WordPress administrators, potentially leading to unauthorized configuration changes, privilege escalation, or other malicious activities.
Affected Products
- Add Polylang support for Customizer WordPress plugin versions through 1.4.5
- WordPress installations using the add-polylang-support-for-customizer plugin
Discovery Timeline
- January 22, 2026 - CVE-2026-22462 published to NVD
- January 22, 2026 - Last updated in NVD database
Technical Details for CVE-2026-22462
Vulnerability Analysis
This CSRF vulnerability (CWE-352) exists in the Add Polylang support for Customizer plugin, which extends WordPress Customizer functionality to support the Polylang multilingual plugin. The vulnerability stems from insufficient validation of request origins, allowing attackers to craft malicious requests that execute administrative actions without proper authorization verification.
When a WordPress administrator who is logged in visits a malicious webpage or clicks a crafted link, the attacker can force the victim's browser to send authenticated requests to the WordPress site. Because the plugin fails to implement proper anti-CSRF tokens or nonce validation, these forged requests are processed as if they were legitimate user actions.
Root Cause
The root cause of this vulnerability is the absence or improper implementation of CSRF protection mechanisms in the plugin's form handling and AJAX request processing. WordPress provides built-in functions like wp_nonce_field() and check_admin_referer() for CSRF protection, but these safeguards were not adequately implemented in the affected versions of the plugin.
Attack Vector
The attack requires social engineering to lure an authenticated WordPress administrator to interact with attacker-controlled content. The attacker crafts a malicious HTML page containing hidden forms or JavaScript that automatically submit requests to the target WordPress site. When the victim visits this page while logged into their WordPress dashboard, the browser automatically includes session cookies with the forged requests.
A typical attack scenario involves embedding a hidden form that targets plugin configuration endpoints. When the form auto-submits, the victim's authenticated session processes the request, allowing the attacker to modify plugin settings or trigger administrative functions without the victim's knowledge.
Detection Methods for CVE-2026-22462
Indicators of Compromise
- Unexpected changes to Polylang or Customizer settings without administrator action
- Unusual administrative activity in WordPress audit logs from legitimate user accounts
- Reports from administrators of unexplained configuration modifications
- Browser history showing visits to unknown or suspicious external sites shortly before configuration changes
Detection Strategies
- Monitor WordPress admin activity logs for configuration changes to the Customizer or Polylang settings
- Implement web application firewall rules to detect and block common CSRF attack patterns
- Review server access logs for suspicious POST requests to plugin endpoints from external referrers
- Deploy browser-based security extensions that warn users about potential CSRF attacks
Monitoring Recommendations
- Enable comprehensive WordPress activity logging to track all administrative actions
- Configure alerts for unexpected changes to plugin configurations
- Regularly audit user sessions and administrative access patterns
- Implement Content Security Policy headers to restrict form submission targets
How to Mitigate CVE-2026-22462
Immediate Actions Required
- Update the Add Polylang support for Customizer plugin to a patched version when available
- Consider temporarily disabling the plugin if no patch is available and functionality is not critical
- Implement additional server-side CSRF protections through web application firewalls
- Educate WordPress administrators about CSRF risks and safe browsing practices
Patch Information
Organizations should monitor the Patchstack CSRF Vulnerability Report for updates on available patches. Check the WordPress plugin repository for version updates beyond 1.4.5 that address this security issue.
Workarounds
- Restrict access to the WordPress admin panel to trusted IP addresses only
- Use a web application firewall (WAF) with CSRF attack detection capabilities
- Implement browser-based anti-CSRF extensions for administrators
- Ensure administrators log out of WordPress sessions when not actively managing the site
- Consider implementing same-site cookie attributes at the server level
# WordPress .htaccess configuration to restrict admin access by IP
<Files wp-login.php>
Order Deny,Allow
Deny from all
Allow from YOUR.TRUSTED.IP.ADDRESS
</Files>
<Directory /var/www/html/wp-admin>
Order Deny,Allow
Deny from all
Allow from YOUR.TRUSTED.IP.ADDRESS
</Directory>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
