CVE-2026-39838

N/A

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.

CVE Details

CVSS v3.1 ScoreN/A

Published4/7/2026

Last Modified4/8/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://gerrit.wikimedia.org/r/q/Idd51e18479b32b7176b43ff74ca1c49d6bdd0628(c4f26cc8-17ff-4c99-b5e2-38fc1793eacc)

https://phabricator.wikimedia.org/T406088(c4f26cc8-17ff-4c99-b5e2-38fc1793eacc)

IOC Correlations

No correlations recorded

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