CVE-2025-27359: WP Media File Type Manager CSRF Flaw

CVE-2025-27359 Overview

CVE-2025-27359 is a Cross-Site Request Forgery (CSRF) vulnerability in the Seerox WP Media File Type Manager WordPress plugin. The flaw affects all plugin versions up to and including 2.3.1. An attacker can trick an authenticated administrator into submitting a forged request that changes plugin settings without consent. The vulnerability is tracked under CWE-352 and requires user interaction to succeed.

Critical Impact
Successful exploitation lets a remote attacker modify plugin settings by coercing an authenticated user into clicking a crafted link, resulting in unauthorized integrity changes to WordPress media handling configuration.

Affected Products

Seerox WP Media File Type Manager plugin for WordPress
All versions from n/a through 2.3.1
WordPress sites with the plugin installed and active

Discovery Timeline

2025-06-06 - CVE-2025-27359 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-27359

Vulnerability Analysis

The vulnerability stems from missing or improper CSRF protection on plugin settings endpoints. The WP Media File Type Manager plugin fails to validate a request-origin nonce before applying settings changes. An attacker hosts a malicious page containing a crafted form or request targeting the plugin's settings handler. When an authenticated WordPress administrator visits the page, the browser automatically submits the request with valid session cookies. The plugin processes the request as legitimate and applies the attacker-controlled configuration.

This Cross-Site Request Forgery flaw affects the integrity of the plugin's configuration state. It does not directly disclose sensitive data or crash the site. However, attackers can alter which file types the plugin permits for upload, potentially expanding the attack surface for follow-on file upload abuse.

Root Cause

The root cause is the absence of a valid WordPress nonce check on state-changing requests. WordPress provides wp_nonce_field() and check_admin_referer() primitives specifically to prevent CSRF, and the plugin does not enforce them on affected settings actions.

Attack Vector

Exploitation requires network access to deliver a malicious URL or page, and interaction from an authenticated administrator. The attacker crafts a forged HTTP request targeting the plugin settings endpoint and embeds it in a link, image tag, or auto-submitting form. Because the browser attaches the admin's session cookie, the WordPress backend accepts the request. No credentials or privileges are required on the attacker side beyond luring the victim to a controlled page. Refer to the Patchstack WordPress Vulnerability Advisory for technical details.

Detection Methods for CVE-2025-27359

Indicators of Compromise

Unexpected changes to WP Media File Type Manager plugin settings, particularly allowed MIME types or file extensions
WordPress access logs showing POST requests to the plugin's admin settings handler with Referer headers pointing to external, untrusted domains
Administrator sessions that hit plugin settings endpoints shortly after visiting external links or email content

Detection Strategies

Monitor WordPress wp-admin request logs for state-changing requests to plugin settings pages that lack a matching prior GET to the settings form
Compare current plugin configuration against a known-good baseline and alert on drift
Inspect HTTP Referer and Origin headers on administrative POST requests and flag cross-origin submissions

Monitoring Recommendations

Enable WordPress audit logging to record plugin option changes and administrator activity
Forward web server and WordPress audit logs to a central SIEM for correlation with user browsing telemetry
Alert on plugin settings modifications occurring outside of scheduled maintenance windows

How to Mitigate CVE-2025-27359

Immediate Actions Required

Update the WP Media File Type Manager plugin to a version later than 2.3.1 as soon as the vendor publishes a fix
If no patched version is available, deactivate and remove the plugin until a fix is released
Review current plugin settings and restore any values that appear to have been modified without authorization

Patch Information

At the time of publication, no fixed version is listed in the enriched CVE data. Consult the Patchstack advisory for the latest remediation guidance and any released updates from the vendor.

Workarounds

Require administrators to log out of WordPress when not actively managing the site to reduce the window for CSRF exploitation
Deploy a Web Application Firewall (WAF) rule that blocks cross-origin POST requests to wp-admin endpoints associated with the plugin
Enforce SameSite=Strict or SameSite=Lax on WordPress session cookies where the hosting environment permits
Restrict administrative access to trusted IP ranges through server-level access controls

bash

# Example nginx rule to block cross-origin POSTs to wp-admin
location ~* /wp-admin/.*\.php$ {
    if ($request_method = POST) {
        if ($http_origin !~* ^https?://(www\.)?example\.com$) {
            return 403;
        }
    }
}