CVE-2026-126567

Description

Semantic MediaWiki 3.0.0 before 7.4.1 contains a stored cross-site scripting vulnerability in Special:Ask with the ElasticStore backend, allowing users with edit rights to inject script through unescaped native_result and score_set output. Attackers can store markup in a Text property or subobject name, then lure victims including administrators to a crafted Special:Ask link to execute script in their session.

References

• https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/MediaWiki/Specials/SpecialAsk.php#L512-L521
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/Query/ScoreSet.php#L128-L140
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/fca9922835f4353e67a71cfef4d527d46e7c3ad3
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-7j96-w9cc-r7rq