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CVE-2026-39838

ProofreadPage improperly sanitizes multiline styles using Sanitizer::checkCSS PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Wikimedia Foundation / MediaWiki - ProofreadPage Extensionaffected 0 before 1.43; unaffected 1.43; unaffected 1.44; unaffected 1.45

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.