CVE-2026-126567
Semantic MediaWiki 3.0.0 before 7.4.1 Stored XSS via Special:Ask Debug Output
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | semanticmediawiki |
| Product | semanticmediawiki |
| Published | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
SemanticMediaWiki / SemanticMediaWiki
3.0.0 < 7.4.1
References
github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-7j96-w9cc-r7rq github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/fca9922835f4353e67a71cfef4d527d46e7c3ad3 github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1 github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/MediaWiki/Specials/SpecialAsk.php#L512-L521 github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/Query/ScoreSet.php#L128-L140 vulncheck.com: https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.4.1-stored-xss-via-special-ask-debug-output
Credits
AlpetGexha