Skip to content
OpenAdvisories
Medium · 4.8 CVE-2026-116883 EUVD-2026-110711GHSA-8v49-wg82-6ffh

Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions

Published Oct 27, 2026 · Updated Nov 4, 2026 · Assigned by VulnCheck

Description

Semantic MediaWiki from 3.1.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows authenticated schema editors to inject HTML through schema descriptions. Attackers with the smw-schemaedit permission can save HTML that is passed unescaped to Html::rawElement() in HtmlBuilder, altering pages and targeting users who view the schema.

Affected products

VendorProductAffectedFixed
SemanticMediaWiki SemanticMediaWiki 3.1.0 – < 7.3.1 7.3.1

References