CVE-2025-61644 i18n XSS through Special:Watchlist
An attacker can inject malicious scripts into the MediaWiki Special:Watchlist page, potentially compromising user sessions or executing code in the victim's browser.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61644?
CVE-2025-61644 is a cross-site scripting vulnerability in Wikimedia Foundation MediaWiki, published on 2 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Rcfilters/ui/WatchlistTopSectionWidget.Js.
This issue affects MediaWiki: from * before > fb856ce9cf121e046305116852cca4899ecb48ca.
Weakness: CWE-79
Which versions are affected by CVE-2025-61644?
How do I fix CVE-2025-61644?
No fix has been published for CVE-2025-61644 yet. Limit exposure of the affected software until one is available.
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-2025-61644 being exploited?
There is no known exploitation of CVE-2025-61644 in the wild and no public exploit code.
Sources
Also known as GHSA-664f-j627-v386, UBUNTU-CVE-2025-61644.