CVE-2025-6064 Overview
CVE-2025-6064 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the WP URL Shortener plugin for WordPress in all versions up to and including 1.2. The flaw stems from missing or incorrect nonce validation on the url_shortener_settings page. Unauthenticated attackers can update plugin settings and inject malicious web scripts through a forged request, provided they trick a site administrator into clicking a crafted link. The vulnerability is classified under CWE-352.
Critical Impact
Successful exploitation allows attackers to modify plugin settings and inject stored scripts that execute in administrator or visitor browser sessions, enabling account takeover pathways and site defacement.
Affected Products
- WP URL Shortener plugin for WordPress — all versions through 1.2
- WordPress sites running the vulnerable plugin with active administrator sessions
- Any site where administrators can be phished into clicking crafted URLs
Discovery Timeline
- 2025-06-14 - CVE-2025-6064 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-6064
Vulnerability Analysis
The WP URL Shortener plugin exposes a settings page identified as url_shortener_settings that processes administrative updates without validating a WordPress nonce token. WordPress uses nonces to bind state-changing requests to an authenticated session, and their absence allows any origin to trigger settings changes on behalf of an authenticated administrator. The Exploit Prediction Scoring System (EPSS) probability sits at 0.117%, reflecting a low predicted rate of active exploitation but not a low impact for targeted sites.
Because the settings endpoint also accepts values that are later rendered in the site, the CSRF primitive extends into script injection. An attacker who forges a settings update can persist malicious JavaScript that runs in the context of the WordPress site. This combined CSRF plus stored script injection pattern is common in plugins that omit both wp_verify_nonce() checks and output escaping.
Root Cause
The root cause is missing or incorrect nonce validation on form submissions targeting the plugin settings handler. WordPress developer guidance requires calling wp_nonce_field() in forms and check_admin_referer() or wp_verify_nonce() in handlers. The vulnerable code path accepts POST parameters and writes them to plugin options without confirming request origin or authenticity.
Attack Vector
Exploitation requires user interaction from an authenticated site administrator. The attacker hosts a page or sends a link containing a hidden form or image tag that submits crafted parameters to the WP URL Shortener settings endpoint. When the administrator visits the malicious page while logged into WordPress, the browser attaches session cookies to the forged request and the plugin processes it as legitimate. The injected script then executes for subsequent visitors or administrators viewing the affected settings output.
The vulnerability manifests in the plugin's settings submission handler. See the WordPress Plugin Source Code and Wordfence Vulnerability Report for handler-level details.
Detection Methods for CVE-2025-6064
Indicators of Compromise
- Unexpected changes to WP URL Shortener plugin settings without a corresponding administrator action log entry
- Presence of <script> tags or JavaScript event handlers stored in plugin option values within wp_options
- HTTP POST requests to the plugin settings endpoint with Referer headers pointing to external domains
- Outbound traffic from site visitors to attacker-controlled domains after loading pages that render plugin output
Detection Strategies
- Audit the wp_options table for entries related to url_shortener_settings containing HTML or script content
- Inspect web server access logs for POST requests to the plugin admin page originating from cross-site referrers
- Monitor WordPress admin activity for settings changes that lack matching user session context
- Deploy content security policy (CSP) violation reporting to surface unexpected inline script execution
Monitoring Recommendations
- Enable a WordPress activity log plugin to capture option changes and administrator actions with timestamps
- Alert on modifications to plugin option keys outside change windows
- Correlate administrator browser sessions with settings update events to identify forged submissions
How to Mitigate CVE-2025-6064
Immediate Actions Required
- Deactivate the WP URL Shortener plugin until a patched version is confirmed available
- Review and reset plugin settings, removing any injected HTML or JavaScript payloads from stored options
- Force administrator session logout and rotate WordPress administrator credentials if compromise is suspected
- Scan site content for stored script injections introduced through forged settings updates
Patch Information
As of the last NVD update on 2026-06-17, no fixed version is referenced in the advisory data. Site owners should monitor the Wordfence Vulnerability Report and the WordPress plugin repository for an updated release that implements wp_nonce_field() and check_admin_referer() on the url_shortener_settings handler.
Workarounds
- Remove the WP URL Shortener plugin and replace it with a maintained alternative that enforces nonce validation
- Restrict WordPress administrator accounts to dedicated browsers or profiles not used for general browsing
- Deploy a web application firewall rule that blocks POST requests to the plugin settings endpoint lacking a valid same-origin Referer header
- Enforce a strict Content Security Policy that disallows inline scripts on WordPress admin and public pages
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
