CVE-2025-14170: 
WordPress vulnerability analysis and mitigation

CVE-2025-14170 is a Missing Authorization vulnerability in the Vimeo SimpleGallery plugin for WordPress, affecting all versions up to and including 0.2. The flaw allows authenticated attackers with Subscriber-level access or higher to modify arbitrary plugin settings by exploiting missing authorization checks on the vimeogallery_admin function hooked to admin_menu. It was published on December 12, 2025, and assigned by Wordfence. The CVSS v3.1 base score is 4.3 (Medium) (Wordfence, Red Hat CVE).

The root cause is classified as CWE-862 (Missing Authorization). The vimeogallery_admin function, registered via the WordPress admin_menu hook, does not perform capability checks before processing requests, allowing any authenticated user — regardless of role — to submit requests with the action parameter to alter plugin settings. Exploitation requires only a valid WordPress account (Subscriber or above) and network access to the target site. The vulnerable code is visible in the plugin source at line 22 of vimeo_simplegallery.php (Wordfence, WordPress Trac).

Successful exploitation allows authenticated low-privileged users to modify arbitrary Vimeo SimpleGallery plugin settings, compromising the integrity of the WordPress site's gallery configuration. While confidentiality and availability are not directly impacted, unauthorized settings changes could be leveraged to inject malicious content or disrupt gallery functionality. The scope is limited to the plugin's configuration, but on sites where gallery content is user-facing, this could facilitate content manipulation or social engineering attacks (Wordfence).

No public exploit code or active in-the-wild exploitation has been reported for CVE-2025-14170. The EPSS score is approximately 0.026% (0.000260), indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation requires authenticated access, further limiting the attack surface (Feedly).

1. Reconnaissance: Identify WordPress sites running the Vimeo SimpleGallery plugin (version ≤ 0.2) using tools like WPScan or by checking /wp-content/plugins/vimeo-simplegallery/ for plugin presence.
2. Obtain Authenticated Access: Register or use an existing low-privileged account (Subscriber or above) on the target WordPress site.
3. Craft Malicious Request: Send an authenticated HTTP POST or GET request to the WordPress admin endpoint that invokes the vimeogallery_admin function, including the desired action parameter value to modify plugin settings.
4. Modify Plugin Settings: Because no capability check is enforced, the server processes the request and updates the plugin configuration as specified, achieving unauthorized settings modification (Wordfence, WordPress Trac).

• Logs: WordPress access logs showing authenticated low-privileged users (Subscriber role) making POST requests to admin endpoints associated with the Vimeo SimpleGallery plugin (e.g., URLs containing page=vimeogallery or similar admin menu slugs).
• Logs: Unexpected changes to plugin settings recorded in the WordPress options table (wp_options) for Vimeo SimpleGallery entries, particularly from non-administrator user accounts.
• File System: No file-level changes expected from this vulnerability alone, but monitor for unexpected modifications to vimeo_simplegallery.php or related plugin files.
• Network: Repeated authenticated requests from low-privileged user sessions targeting WordPress admin pages associated with the gallery plugin.

As of the disclosure date, no patched version of the Vimeo SimpleGallery plugin has been released; all versions up to and including 0.2 are affected. Site administrators should consider deactivating and removing the plugin until a fix is available. As a workaround, restrict user registration or limit Subscriber-level accounts on the WordPress site to reduce the attack surface. Monitor the WordPress plugin repository for an updated version that implements proper capability checks (Wordfence).