CVE-2025-61648
Medium
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files modules/ext.CheckUser.TempAccounts/components/ShowIPButton.Vue, modules/ext.CheckUser.TempAccounts/SpecialBlock.Js. This issue affects CheckUser: from * before 1.44.1.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mediawiki Checkuser
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- mediawiki checkuser1.44.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki checkuser | v < 1.44.1 | 1.44.1 |
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