CVE-2025-10301: FunKItools WordPress Plugin CSRF Flaw

CVE-2025-10301 Overview

CVE-2025-10301 is a Cross-Site Request Forgery (CSRF) vulnerability in the FunKItools plugin for WordPress. The flaw affects all versions up to and including 1.0.2. The plugin's saveFields() function performs missing or incorrect nonce validation, allowing unauthenticated attackers to update plugin settings through forged requests. Exploitation requires social engineering, such as tricking a site administrator into clicking a crafted link while authenticated. The issue is tracked as [CWE-352] Cross-Site Request Forgery.

Critical Impact
Unauthenticated attackers can modify FunKItools plugin settings on affected WordPress sites by luring an authenticated administrator to a malicious page.

Affected Products

FunKItools plugin for WordPress, versions up to and including 1.0.2
WordPress installations with the vulnerable plugin activated
Any site administrator session interacting with attacker-controlled content

Discovery Timeline

2025-10-15 - CVE-2025-10301 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-10301

Vulnerability Analysis

The vulnerability stems from the FunKItools plugin failing to enforce anti-CSRF tokens on state-changing requests. The saveFields() function processes administrative option updates without validating a WordPress nonce or verifying request origin. WordPress provides wp_verify_nonce() and check_admin_referer() specifically to defeat this class of attack, but the plugin omits these checks. An attacker who hosts a malicious page can craft an HTML form or JavaScript request targeting the plugin's settings endpoint. If a logged-in administrator visits that page, the browser automatically attaches session cookies and submits the forged request. The server processes the request as legitimate, applying attacker-chosen settings without user consent. The plugin controller source is available in the WordPress Plugin File Reference.

Root Cause

The root cause is missing or incorrect nonce validation on the saveFields() handler inside includes/controllers/options/page.php. WordPress plugins must pair privileged actions with a nonce generated by wp_create_nonce() and verified server-side before persisting changes. FunKItools accepts option updates based solely on the authenticated session context, which any browser will provide automatically during a cross-site request.

Attack Vector

Exploitation is remote and requires user interaction. An attacker crafts a page containing an auto-submitting form or JavaScript fetch() call directed at the vulnerable plugin endpoint. The attacker then delivers the link through phishing email, forum posts, comments, or malvertising. When a WordPress administrator with an active session opens the link, the request executes with administrator privileges. The impact is limited to modifying plugin settings, but altered settings can be chained with other flaws to further compromise a site. Additional context is available in the Wordfence Vulnerability Analysis.

Detection Methods for CVE-2025-10301

Indicators of Compromise

Unexpected changes to FunKItools plugin configuration recorded in the WordPress wp_options table
Administrator HTTP POST requests to FunKItools option endpoints originating from external Referer headers
Access log entries showing FunKItools settings updates immediately following administrator visits to untrusted URLs

Detection Strategies

Audit WordPress request logs for POST requests to FunKItools admin URLs where the Referer header points outside the site's own domain
Enable WordPress audit logging plugins to record option changes and correlate them with administrator browsing activity
Compare current FunKItools settings against a known-good baseline and flag drift

Monitoring Recommendations

Alert on administrator sessions performing settings changes shortly after clicking external links
Monitor web server logs for anomalous cross-origin POST requests targeting /wp-admin/ paths associated with FunKItools
Track plugin option modification events through file integrity monitoring or database triggers on wp_options

How to Mitigate CVE-2025-10301

Immediate Actions Required

Deactivate the FunKItools plugin until a patched release is confirmed available and installed
Instruct administrators to log out of WordPress sessions before browsing untrusted content
Review FunKItools settings for unauthorized modifications and restore known-good values
Rotate administrator credentials if suspicious activity is observed in access logs

Patch Information

No fixed version is identified in the available advisory data. Site owners should monitor the plugin's page on the WordPress.org repository and the Wordfence Vulnerability Analysis for updates. Any release beyond 1.0.2 should be evaluated for the presence of wp_verify_nonce() or check_admin_referer() calls on the saveFields() handler before deployment.

Workarounds

Remove or disable the FunKItools plugin on production sites until a patched version is verified
Deploy a Web Application Firewall (WAF) rule that blocks POST requests to FunKItools admin endpoints when the Referer header does not match the site's own origin
Enforce browser isolation or dedicated administrative browsers for WordPress management sessions to limit CSRF exposure
Restrict /wp-admin/ access by IP allowlist so that forged requests from arbitrary user browsers cannot reach the endpoint

bash

# Example NGINX rule to block cross-origin POST requests to WordPress admin endpoints
location ~ ^/wp-admin/ {
    if ($request_method = POST) {
        set $csrf_block "";
        if ($http_referer !~* "^https?://your-domain\.tld/") {
            set $csrf_block "1";
        }
        if ($csrf_block = "1") {
            return 403;
        }
    }
}