CVE-2026-100380

UNKNOWN 0.0

Reflected XSS in Wikibase Special:SetLabel language validation

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.

CWE	CWE-79
Vendor	wikimedia foundation
Product	mediawiki - wikibase extension
Published	Sep 25, 2026

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Affected Versions

Wikimedia Foundation / Mediawiki - Wikibase Extension

* < 1.46.1, 1.45.5, 1.43.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

phabricator.wikimedia.org: https://phabricator.wikimedia.org/T434549 gerrit.wikimedia.org: https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857

Credits

Marco Paciaroni (bombobombone)