CVE-2026-39640 WordPress Theme Editor plugin <= 3.2 - Cross Site Request Forgery (CSRF) to Remote Code Execution vulnerability

Critical 9.6 Published Updated

A CSRF vulnerability in the WordPress Theme Editor plugin allows attackers to inject code, potentially leading to remote code execution.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-39640?

CVE-2026-39640 is a critical vulnerability in mndpsingh287 Theme Editor, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-Site Request Forgery (CSRF) vulnerability in mndpsingh287 Theme Editor theme-editor allows Code Injection.This issue affects Theme Editor: from n/a through <= 3.2.

Weakness: CWE-352

Which versions are affected by CVE-2026-39640?

How do I fix CVE-2026-39640?

No fix has been published for CVE-2026-39640 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-39640 being exploited?

There is no known exploitation of CVE-2026-39640 in the wild and no public exploit code.

Sources

Also known as GHSA-hgvj-3389-4m2h.

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