Security Advisory

CVE-2026-39838

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-04-07 19:17:51

Last updated 2026-04-08 18:48:41

Assigner wikimedia-foundation

CVSS score 6.9

State PUBLISHED

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.

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