CVE-2026-116886

MediumCVSS 5.4/10Last modified Nov 3, 2026

Description

Semantic MediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject scripts via External identifier property values. Attackers can annotate markup payloads that ExternalIdentifierValue renders unescaped on Special:Browse, executing JavaScript in viewers' sessions, including administrators.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
SemanticMediaWiki	SemanticMediaWiki	>= 2.5.0, < 7.3.1

References

https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-2gfw-3hj2-wfq5Exploit, Vendor Advisory
https://www.vulncheck.com/advisories/semantic-mediawiki-before-7.3.1-stored-xss-via-external-identifier-in-special-browseThird Party Advisory

Timeline

Published: Oct 27, 2026
Last modified: Nov 3, 2026
NVD status: Analyzed

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