CVE-2025-57924: Automattic Developer CSRF Vulnerability

CVE-2025-57924 Overview

CVE-2025-57924 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Automattic Developer WordPress plugin. The flaw impacts all versions of the plugin up through 1.2.6. An attacker can trick an authenticated administrator into submitting a forged request that performs unintended actions within the plugin. Exploitation requires user interaction, typically by luring a logged-in user to a malicious page. The weakness is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact
An attacker can perform unauthorized state-changing operations on behalf of an authenticated WordPress administrator by exploiting missing CSRF protections in the Developer plugin.

Affected Products

Automattic Developer WordPress plugin, versions up to and including 1.2.6
WordPress sites running the vulnerable plugin with authenticated administrator sessions
Any hosting environment where administrators browse the web while logged into WordPress

Discovery Timeline

2025-09-22 - CVE-2025-57924 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-57924

Vulnerability Analysis

The Automattic Developer plugin fails to validate the origin of state-changing HTTP requests. WordPress provides wp_nonce tokens and the check_admin_referer() function to defend against CSRF, but the affected plugin endpoints do not enforce these checks consistently. As a result, requests submitted from an attacker-controlled page execute with the privileges of the currently authenticated user.

Exploitation requires the victim to be logged into WordPress and to visit a page under attacker control. The attack is limited to integrity impact, with no direct data disclosure or availability effect. See the Patchstack advisory for the vendor tracking record. The EPSS probability of exploitation stands near the low end of the distribution, reflecting limited public exploit interest at this time.

Root Cause

The root cause is missing or improperly implemented anti-CSRF controls on plugin request handlers. Specifically, sensitive actions do not verify a per-session nonce or the Referer/Origin header before executing. This omission maps directly to [CWE-352].

Attack Vector

The attack vector is network-based and requires user interaction. An attacker crafts an HTML page containing a hidden form or JavaScript that auto-submits a request to the vulnerable Developer plugin endpoint. When a logged-in WordPress administrator loads that page, the browser attaches session cookies and issues the request, causing the plugin to execute the attacker-chosen action.

No verified public proof-of-concept code is available. The vulnerability mechanism follows the standard CSRF pattern: forged cross-origin request, ambient authority via session cookies, and absent nonce validation on the server side. Refer to the Patchstack entry for additional technical context.

Detection Methods for CVE-2025-57924

Indicators of Compromise

Unexpected configuration changes within the Developer plugin settings that administrators did not initiate
WordPress access logs showing POST requests to Developer plugin endpoints with external Referer headers
Administrator sessions issuing requests immediately after visiting untrusted third-party sites

Detection Strategies

Inspect web server logs for requests to wp-admin endpoints associated with the Developer plugin that lack a same-origin Referer or Origin header
Correlate WordPress audit logs with browser history or proxy telemetry to identify administrator navigation to untrusted external pages preceding privileged actions
Deploy a Web Application Firewall (WAF) rule to flag POST requests to plugin endpoints missing the expected _wpnonce parameter

Monitoring Recommendations

Enable a WordPress audit logging plugin to record all administrator-level configuration changes
Alert on cross-origin POST requests targeting /wp-admin/admin.php or /wp-admin/admin-post.php handlers registered by the Developer plugin
Review scheduled tasks and plugin settings weekly for drift that could indicate CSRF-driven changes

How to Mitigate CVE-2025-57924

Immediate Actions Required

Deactivate the Automattic Developer plugin on production WordPress sites until a fixed release is confirmed
Restrict WordPress administrator accounts to dedicated browsers or browser profiles that do not visit untrusted sites
Enforce short session lifetimes and require re-authentication for administrative panels

Patch Information

No fixed version is listed in the currently available CVE metadata. Monitor the Patchstack advisory and the plugin's WordPress.org changelog for a release addressing the CSRF flaw in versions beyond 1.2.6. Apply the vendor patch as soon as it becomes available and validate that all plugin request handlers invoke check_admin_referer() or wp_verify_nonce().

Workarounds

Remove or disable the Developer plugin if it is not required for site operations
Deploy a WAF rule that blocks POST requests to Developer plugin endpoints when the Origin or Referer header does not match the site domain
Require administrators to log out of WordPress before browsing external sites and use browser extensions that block third-party cookies on admin domains

bash

# Example ModSecurity rule to block cross-origin POSTs missing a matching Referer
SecRule REQUEST_METHOD "@streq POST" \
  "id:1057924,phase:1,deny,status:403,\
  chain,msg:'CVE-2025-57924 CSRF mitigation - Developer plugin'"
  SecRule REQUEST_URI "@rx /wp-admin/(admin|admin-post)\.php" \
    "chain"
    SecRule &REQUEST_HEADERS:Referer "@eq 0"