CVE-2025-49972 Overview
CVE-2025-49972 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] affecting the David Wood TM Replace Howdy WordPress plugin (tm-replace-howdy). The flaw impacts all plugin versions up to and including 1.4.2. An attacker can trick an authenticated administrator into submitting forged requests that modify plugin settings without consent.
Exploitation requires user interaction, typically by convincing a logged-in site administrator to visit an attacker-controlled page. Successful exploitation yields limited integrity impact but no confidentiality or availability impact.
Critical Impact
An authenticated administrator visiting a malicious page can have plugin settings modified without their consent, enabling unauthorized configuration changes to the WordPress site.
Affected Products
- David Wood TM Replace Howdy WordPress plugin
- All versions from initial release through 1.4.2
- WordPress sites with the plugin installed and active
Discovery Timeline
- 2025-06-20 - CVE-2025-49972 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-49972
Vulnerability Analysis
The TM Replace Howdy plugin fails to implement anti-CSRF protections on state-changing actions. WordPress provides wp_nonce tokens and the check_admin_referer() / wp_verify_nonce() functions specifically to validate request origin. The plugin does not properly verify these tokens before processing administrative actions.
As a result, requests submitted by an authenticated user's browser cannot be distinguished between legitimate admin actions and forged submissions triggered from external origins. The attack requires network access and user interaction from the victim.
Root Cause
The root cause is missing or improperly validated CSRF tokens on administrative request handlers within the plugin. Without a per-request unique token bound to the user session, the plugin trusts any authenticated request bearing valid session cookies, regardless of the request's origin.
Attack Vector
An attacker crafts a malicious webpage containing a hidden form or JavaScript that submits a request to the vulnerable plugin endpoint on the target WordPress site. When an authenticated administrator visits the attacker's page, the browser automatically attaches WordPress session cookies. The plugin processes the forged request as legitimate, resulting in unauthorized state changes. Refer to the Patchstack WordPress Vulnerability Advisory for additional technical details.
Detection Methods for CVE-2025-49972
Indicators of Compromise
- Unexpected changes to TM Replace Howdy plugin configuration values in the WordPress database (wp_options table).
- Administrator sessions showing POST requests to plugin admin endpoints originating from external Referer headers.
- Web server access logs containing plugin admin action requests with missing or absent nonce parameters.
Detection Strategies
- Monitor WordPress audit logs for plugin setting modifications that do not correlate with legitimate administrator activity.
- Inspect HTTP Referer headers on requests targeting wp-admin plugin pages for tm-replace-howdy and flag cross-origin submissions.
- Deploy a Web Application Firewall (WAF) rule set that validates the presence of WordPress nonce parameters on state-changing plugin requests.
Monitoring Recommendations
- Enable WordPress activity logging plugins to capture administrator actions, including options changes and plugin configuration events.
- Alert on administrator account activity generated shortly after the user visits external, uncategorized web content.
- Review web server logs weekly for anomalous POST requests to /wp-admin/admin.php and /wp-admin/options.php referencing the affected plugin.
How to Mitigate CVE-2025-49972
Immediate Actions Required
- Deactivate the TM Replace Howdy plugin until an official patched version is released by the vendor.
- Audit WordPress plugin configuration for unauthorized changes and restore known-good settings.
- Force logout of all active administrator sessions and require password rotation.
Patch Information
At the time of publication, no patched version is listed as available. Versions through 1.4.2 remain vulnerable. Consult the Patchstack advisory for updates on vendor remediation status.
Workarounds
- Remove the TM Replace Howdy plugin entirely if the functionality is non-essential.
- Restrict access to the WordPress admin interface via IP allowlisting at the web server or WAF layer.
- Require administrators to use a dedicated browser profile for WordPress administration to reduce exposure to cross-site attacks.
- Deploy a WAF rule that blocks POST requests to plugin admin endpoints lacking a valid _wpnonce parameter.
# Example: Apache configuration to restrict wp-admin access by IP
<Directory "/var/www/html/wp-admin">
Require ip 203.0.113.0/24
</Directory>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
