All vulnerabilities
CVE-2026-116883GHSA-2xr9-cr6h-wr6m

SemanticMediaWiki: Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions

SemanticMediaWiki SemanticMediaWiki
Open in ThreatlineRecord JSON
CVSS
4.8Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in7.3.1Fixed versionCVE List
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • SemanticMediaWikiaffected: 3.1.0 before 7.3.1CVE List
  • SemanticMediaWikiunaffected: 7.3.1CVE List

References 2