CVE-2025-39423 WordPress Add to Header plugin <= 1.0 - CSRF to XSS vulnerability
A CSRF vulnerability in the Add to Header WordPress plugin allows attackers to inject malicious scripts, leading to stored XSS and potential site compromise.
- 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-2025-39423?
CVE-2025-39423 is a high-severity vulnerability in Jenst Add to Header, published on 17 Apr 2025. 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 Jenst Add to Header add-to-header allows Stored XSS.This issue affects Add to Header: from n/a through <= 1.0.
Weakness: CWE-352
Which versions are affected by CVE-2025-39423?
How do I fix CVE-2025-39423?
No fix has been published for CVE-2025-39423 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-39423 being exploited?
There is no known exploitation of CVE-2025-39423 in the wild and no public exploit code.
Sources
Also known as GHSA-33mx-vpmc-fg9c.