CVE-2025-23815 Overview
CVE-2025-23815 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the root Cookie WordPress plugin developed by linickx. This vulnerability allows attackers to perform unauthorized actions on behalf of authenticated users by tricking them into visiting a malicious webpage. The CSRF vulnerability can be chained with Stored Cross-Site Scripting (XSS), significantly amplifying the potential impact on affected WordPress installations.
Critical Impact
Attackers can exploit this CSRF vulnerability to execute unauthorized actions and potentially inject persistent malicious scripts into the WordPress site, affecting all subsequent visitors.
Affected Products
- root Cookie WordPress plugin version 1.6 and earlier
- WordPress installations using vulnerable root Cookie plugin versions
Discovery Timeline
- 2025-01-16 - CVE CVE-2025-23815 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-23815
Vulnerability Analysis
This CSRF vulnerability exists due to insufficient validation of request origins in the root Cookie WordPress plugin. The plugin fails to properly implement anti-CSRF tokens (nonces) for state-changing operations, allowing attackers to craft malicious requests that execute when an authenticated administrator visits an attacker-controlled page. The vulnerability is particularly dangerous because it can be chained with Stored XSS, meaning attackers can use the CSRF to inject malicious JavaScript that persists in the WordPress database and executes for all site visitors.
The attack requires user interaction (the victim must visit a malicious page while authenticated), but can be delivered through common social engineering techniques such as phishing emails or embedded content on compromised websites.
Root Cause
The root cause of CVE-2025-23815 is the absence of proper CSRF protection mechanisms in the root Cookie plugin. WordPress provides built-in nonce verification functions (wp_nonce_field() and wp_verify_nonce()) that developers should implement to validate that requests originate from legitimate admin sessions. The vulnerable versions of root Cookie plugin fail to implement these security controls for critical plugin settings and configuration endpoints.
Attack Vector
The attack is network-based and requires a victim with administrative privileges to visit a malicious webpage while authenticated to the WordPress site. An attacker would craft an HTML page containing a hidden form or JavaScript that automatically submits a request to the vulnerable WordPress plugin endpoint. When the victim loads the malicious page, their browser automatically includes their WordPress session cookies, causing the forged request to be processed as if it were legitimate.
The CSRF vulnerability can be leveraged to modify plugin settings and inject stored XSS payloads, which would then execute in the context of any user viewing the affected pages on the WordPress site.
Detection Methods for CVE-2025-23815
Indicators of Compromise
- Unexpected changes to root Cookie plugin configuration settings
- Presence of suspicious JavaScript or HTML in plugin-managed content areas
- Unusual network requests to external domains originating from WordPress pages
- Administrator reports of unusual plugin behavior after visiting external links
Detection Strategies
- Monitor WordPress plugin settings for unauthorized modifications
- Implement Content Security Policy (CSP) headers to detect and block unauthorized script execution
- Review server access logs for suspicious POST requests to plugin administration endpoints
- Deploy web application firewalls (WAF) with CSRF detection capabilities
Monitoring Recommendations
- Enable WordPress audit logging to track all plugin configuration changes
- Configure alerts for changes to root Cookie plugin settings
- Monitor for new or modified JavaScript files in WordPress directories
- Implement file integrity monitoring for plugin files and database content
How to Mitigate CVE-2025-23815
Immediate Actions Required
- Update the root Cookie plugin to a patched version if available from the developer
- Consider temporarily disabling the root Cookie plugin until a security patch is released
- Implement additional CSRF protection at the web server or WAF level
- Review and audit current plugin settings for any unauthorized modifications
Patch Information
Security researchers at Patchstack have documented this vulnerability. Administrators should monitor the Patchstack WordPress Vulnerability Report for updated patch information and remediation guidance. Users should update to a version newer than 1.6 once a fix is released by the plugin developer.
Workarounds
- Restrict access to WordPress admin areas using IP whitelisting
- Implement a Web Application Firewall (WAF) with CSRF protection rules
- Ensure administrators avoid clicking links in emails or visiting untrusted sites while logged into WordPress
- Consider using browser extensions that block cross-origin requests
# WordPress htaccess example to restrict admin access by IP
# Add to .htaccess in /wp-admin/ directory
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.100$
RewriteRule ^(.*)$ - [F,L]
</IfModule>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
