CVE-2025-25113 Overview
CVE-2025-25113 is a Cross-Site Scripting (XSS) vulnerability affecting the Senktec Implied Cookie Consent WordPress plugin. This Reflected XSS flaw results from improper neutralization of user input during web page generation, allowing attackers to inject malicious scripts that execute in victims' browsers when they click crafted links.
Critical Impact
Attackers can execute arbitrary JavaScript in authenticated user sessions, potentially leading to session hijacking, credential theft, or unauthorized actions on behalf of WordPress administrators.
Affected Products
- Senktec Implied Cookie Consent plugin versions through 1.3
- WordPress installations using the implied-cookie-consent plugin
- All sites with vulnerable plugin versions exposed to unauthenticated users
Discovery Timeline
- 2025-03-03 - CVE-2025-25113 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-25113
Vulnerability Analysis
This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The Implied Cookie Consent plugin fails to properly sanitize user-supplied input before reflecting it back in HTTP responses. When a victim clicks a maliciously crafted URL containing JavaScript payload, the script executes within the security context of the vulnerable WordPress site.
The attack requires user interaction—specifically, the victim must follow a link containing the malicious payload. Upon execution, the injected script gains access to the DOM, cookies, and can perform actions as the authenticated user. This is particularly dangerous when targeting WordPress administrators, as it could lead to full site compromise through privilege abuse.
Root Cause
The root cause stems from insufficient input validation and output encoding within the Implied Cookie Consent plugin. User-controllable parameters are directly embedded into HTML output without proper sanitization using WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses(). This allows special characters used in JavaScript and HTML to be interpreted as code rather than data.
Attack Vector
The attack is executed over the network and requires a victim to interact with a malicious link. An attacker crafts a URL containing JavaScript payload in a vulnerable parameter and distributes it via phishing emails, social media, or malicious websites. When the victim—particularly a logged-in WordPress administrator—clicks the link, the malicious script executes in their browser session.
The reflected nature means the payload is not stored on the server but is instead reflected back to the user through the HTTP response. The scope change indicated by the vulnerability metrics means the attack can affect resources beyond the vulnerable component itself, potentially impacting the broader WordPress installation.
Detection Methods for CVE-2025-25113
Indicators of Compromise
- Suspicious access logs containing JavaScript code fragments in URL parameters targeting the implied-cookie-consent plugin
- Unusual HTTP requests with encoded payloads such as %3Cscript%3E in query strings
- Reports from users about unexpected browser behavior or warnings when visiting WordPress admin pages
- Web Application Firewall (WAF) alerts for XSS patterns in requests to WordPress
Detection Strategies
- Deploy Web Application Firewall rules to detect and block common XSS payloads in request parameters
- Enable WordPress security plugins with real-time malicious request monitoring
- Configure server access logs to capture full query strings for forensic analysis
- Implement Content Security Policy (CSP) headers to mitigate script injection impact
Monitoring Recommendations
- Review access logs for requests containing script tags, event handlers, or JavaScript URIs targeting plugin endpoints
- Monitor for unusual admin session activity that may indicate session hijacking post-exploitation
- Set up alerts for repeated failed XSS attempts which may indicate active reconnaissance
How to Mitigate CVE-2025-25113
Immediate Actions Required
- Update the Implied Cookie Consent plugin to a patched version when available from Senktec
- Consider temporarily deactivating the plugin if no patch is available and functionality is not critical
- Implement Web Application Firewall rules to filter XSS payloads targeting WordPress plugins
- Review and audit any custom integrations with the affected plugin
Patch Information
Users should monitor the official WordPress plugin repository and Senktec communications for security updates addressing this vulnerability. The Patchstack WordPress Vulnerability Report provides additional details on this vulnerability. Until a patch is released, implement the workarounds below to reduce exposure.
Workarounds
- Implement strict Content Security Policy headers to prevent inline script execution: Content-Security-Policy: script-src 'self'
- Deploy a WAF with XSS detection rules to filter malicious requests before they reach WordPress
- Restrict access to the WordPress admin area by IP address to limit attack surface
- Educate administrators about phishing risks and the importance of verifying links before clicking
# Configuration example - Add CSP headers in Apache .htaccess
# Place in WordPress root .htaccess file
<IfModule mod_headers.c>
Header set Content-Security-Policy "script-src 'self'; object-src 'none';"
Header set X-XSS-Protection "1; mode=block"
Header set X-Content-Type-Options "nosniff"
</IfModule>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
