CVE-2025-25088 Overview
CVE-2025-25088 is a Cross-Site Request Forgery (CSRF) vulnerability in the WP Keyword Monitor plugin for WordPress, developed by blackus3r. The flaw affects all versions of the plugin up to and including 1.0.5. According to the Patchstack advisory, the CSRF weakness can be chained to inject stored Cross-Site Scripting (XSS) payloads into the application, expanding the impact beyond a simple state-changing request.
The vulnerability is categorized under CWE-352: Cross-Site Request Forgery. Exploitation requires a logged-in WordPress user to interact with attacker-controlled content, typically by visiting a crafted page or following a malicious link.
Critical Impact
An attacker can forge authenticated requests through a victim's browser to inject persistent XSS payloads into the WP Keyword Monitor plugin, leading to session theft, administrative action abuse, and downstream compromise of WordPress site users.
Affected Products
- blackus3r WP Keyword Monitor plugin for WordPress
- All versions from initial release through 1.0.5
- WordPress sites with the wp-keyword-monitor plugin installed and active
Discovery Timeline
- 2025-02-07 - CVE-2025-25088 published to the National Vulnerability Database
- 2026-04-23 - Last updated in the NVD database
Technical Details for CVE-2025-25088
Vulnerability Analysis
The WP Keyword Monitor plugin fails to validate the origin and intent of authenticated state-changing HTTP requests. WordPress provides a built-in nonce mechanism through functions such as wp_nonce_field() and check_admin_referer() to mitigate CSRF. The affected plugin code paths do not enforce these checks before accepting input that updates plugin settings or stored data.
The Patchstack advisory characterizes the issue as a CSRF that escalates to stored XSS. An attacker constructs a crafted form or request that, when submitted by an authenticated administrator's browser, writes attacker-controlled content into the plugin's configuration or database storage. That content is later rendered in the WordPress admin context without sufficient output encoding, executing JavaScript in the victim's session.
Root Cause
The root cause is missing or inadequate CSRF token validation on privileged endpoints within the wp-keyword-monitor plugin. Combined with insufficient input sanitization and output escaping, the absence of nonce verification allows attacker-supplied payloads to persist as stored XSS.
Attack Vector
Exploitation occurs over the network and requires user interaction. An attacker hosts a malicious page or sends a link to a logged-in WordPress administrator. When the victim visits the page, the browser issues a forged request to the vulnerable plugin endpoint, carrying the victim's authentication cookies. The injected payload is stored server-side and executed when an administrator subsequently views the affected plugin screen. The scope is changed because XSS executed in the admin interface affects other users beyond the initial victim.
No working exploit code is published in the referenced advisory. Refer to the Patchstack Vulnerability Report for the full technical write-up.
Detection Methods for CVE-2025-25088
Indicators of Compromise
- Unexpected <script> tags, event handlers, or encoded JavaScript stored in WP Keyword Monitor plugin settings or database tables.
- WordPress administrator sessions performing unusual actions immediately after visiting external URLs referenced in HTTP Referer headers.
- New or modified administrative users, plugin installations, or theme edits with no corresponding entry in legitimate change records.
Detection Strategies
- Audit the WordPress database for plugin option rows associated with wp-keyword-monitor and inspect stored values for HTML or JavaScript content.
- Review web server access logs for POST requests to wp-admin endpoints tied to the plugin that lack a same-origin Referer header.
- Inspect rendered plugin admin pages in a sandboxed browser to identify reflected or stored script execution.
Monitoring Recommendations
- Enable WordPress audit logging to track plugin setting changes, user creation, and option updates.
- Monitor outbound requests from administrator browsers to unfamiliar domains, which can indicate data exfiltration through XSS.
- Alert on plugin file modifications and on installation of unsigned or unexpected plugins following suspicious admin activity.
How to Mitigate CVE-2025-25088
Immediate Actions Required
- Deactivate and remove the WP Keyword Monitor plugin if a patched version is not available for your site.
- Force a password reset for all WordPress administrator and editor accounts to invalidate sessions potentially exposed to stored XSS.
- Review plugin configuration data and remove any unauthorized HTML or JavaScript content from stored options.
Patch Information
The Patchstack advisory lists all versions through 1.0.5 as affected and does not confirm a fixed release at the time of publication. Site operators should monitor the Patchstack Vulnerability Report and the plugin's WordPress.org page for updates. If no patched version is published, uninstall the plugin and select a maintained alternative.
Workarounds
- Restrict access to /wp-admin using IP allowlists or VPN-only access to reduce CSRF exposure from arbitrary external pages.
- Deploy a Web Application Firewall (WAF) rule that enforces same-origin checks on POST requests to plugin endpoints and blocks payloads containing script tags.
- Require administrators to use isolated browser profiles for WordPress administration and avoid cross-site browsing during admin sessions.
- Enable a Content Security Policy (CSP) on the WordPress admin interface to limit inline script execution.
# Example: disable and remove the vulnerable plugin using WP-CLI
wp plugin deactivate wp-keyword-monitor
wp plugin delete wp-keyword-monitor
# Verify the plugin is no longer installed
wp plugin list | grep wp-keyword-monitor
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
