CVE-2025-11261
Medium
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.Language/mediawiki.Language.Js. This issue affects MediaWiki: from * before 1.39.15, 1.43.5, 1.44.2.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mediawiki
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- mediawiki mediawiki1.39.15, 1.43.5, 1.44.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki mediawiki | v < 1.39.15, 1.43.0 ≤ v < 1.43.5, 1.44.0 ≤ v < 1.44.2 | 1.39.15, 1.43.5, 1.44.2 |
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