CVE-2025-6595 Cross-site scripting in MultimediaViewer
An XSS vulnerability in Wikimedia MultimediaViewer allows attackers to inject scripts, potentially leading to code execution or account takeover.
- 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
- Available
What is CVE-2025-6595?
CVE-2025-6595 is a cross-site scripting vulnerability in Wikimedia Foundation MultimediaViewer, published on 2 Feb 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
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MultimediaViewer.This issue affects MultimediaViewer: from * before 1.39.13, 1.42.7, 1.43.2, 1.44.0.
Weakness: CWE-79
Which versions are affected by CVE-2025-6595?
How do I fix CVE-2025-6595?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-6595 being exploited?
There is no known exploitation of CVE-2025-6595 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-6595, GHSA-3hx4-75gf-pcm8, UBUNTU-CVE-2025-6595.