CVE-2026-116886 Semantic MediaWiki before 7.3.1 Stored XSS via External Identifier in Special:Browse
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116886?
CVE-2026-116886 is a medium-severity vulnerability in SemanticMediaWiki, published on 27 Oct 2026.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-116886?
How do I fix CVE-2026-116886?
No fix has been published for CVE-2026-116886 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116886 being exploited?
There is no known exploitation of CVE-2026-116886 in the wild and no public exploit code.
Sources
Also known as GHSA-2gfw-3hj2-wfq5, GHSA-r3ph-v85f-2wx6.