Vulnerability 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.
Related Weaknesses (CWE)
References
- https://gerrit.wikimedia.org/r/q/I1fc7b7e1d234b0aaf9f7d782a65da1451577587e
- https://phabricator.wikimedia.org/T418179
FAQ
What is CVE-2026-39933?
CVE-2026-39933 is a documented vulnerability. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - GlobalWatchlist Extension allows Cross-Site Scripting (XSS). ...
How severe is CVE-2026-39933?
CVSS scoring is not yet available for CVE-2026-39933. Check NVD for updates.
Is there a patch for CVE-2026-39933?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.