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VULNERABILITIES

CVE-2026-39933 Details

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting (XSS). The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gerrit.wikimedia.org/r/q/I1fc7b7e1d234b0aaf9f7d782a65da1451577587e wikimedia-foundation
https://phabricator.wikimedia.org/T418179 wikimedia-foundation

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')wikimedia-foundation

Affected Products

No affected product data is available for this CVE.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-39933
NVD Published Date:
Apr 7, 2026
NVD Last Modified:
Jul 21, 2026
Source:
wikimedia-foundation
CVE-2026-39933 Details - Not Deferred