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Medium · 6.1 CVE-2026-77607 EUVD-2026-83181GHSA-7xv3-gf2g-498h

Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS

Published Sep 18, 2026 · Updated Sep 18, 2026 · Assigned by GitHub_M

Description

Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `sep` was inserted verbatim into HTML cell joins. This made it possible to inject HTML through the separator value. Version 7.2.0 fixes the issue.

Affected products

VendorProductAffectedFixed
SemanticMediaWiki SemanticMediaWiki < 7.2.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist mediawiki/semantic-media-wiki < 7.2.0 7.2.0 GHSA-7xv3-gf2g-498h

References