VULNERABILITY INTELLIGENCE
CVE-2026-39838
EPSS probability0.40%
CISA KEVNot currently listed
Published2026-04-07
Last modified2026-07-21
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows XSS Targeting Non-Script Elements. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.
Weakness classification
- c4f26cc8-17ff-4c99-b5e2-38fc1793eacc: CWE-79