[ CVE-2026-116882 · Published 27 Oct 2026 ]

Vulnerability in SemanticMediaWiki

CVSS 4.8 EPSS <1%No fix listed yet

[ Description ]Official description

Semantic MediaWiki from 4.2.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows authenticated profile or schema editors to inject HTML through FacetedSearch exploration-link labels. Attackers can store markup in the label, which ExploreListBuilder::buildHTML() passes unescaped to Html::rawElement(), altering the Special:FacetedSearch page and potentially running scripts in viewers' browsers.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-3r5m-693w-jm33ExploitVendor AdvisoryMitigation
www.vulncheck.com/advisories/semantic-mediawiki-4.2.0-before-7.3.1-stored-xss-via-facet…Third Party Advisory