Medium severity5.4NVD Advisory· Published Nov 11, 2026
CVE-2026-126564
CVE-2026-126564
Description
Semantic MediaWiki 2.5.0 before 7.4.1 contains a stored cross-site scripting vulnerability in ValueFormatter::getFormattedSubject() that renders property label segments after a literal as unescaped markup. Users with page-edit rights can set a preferred property label containing an img onerror payload that executes when anyone, including administrators, views Special:Browse or the smwbrowse API.
Affected products
1- Range: <7.4.1
Patches
Vulnerability mechanics
References
5- github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/MediaWiki/Specials/Browse/ValueFormatter.phpnvd
- github.com/SemanticMediaWiki/SemanticMediaWiki/commit/c9bf9f25549bb2f5eab916339b267a1732002c4cnvd
- github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1nvd
- github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mc5x-2j7v-x8hpnvd
- www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.4.1-stored-xss-via-special-browse-factbox-titlenvd
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