CVE-2026-116887 Semantic MediaWiki 3.0.0 before 7.3.1 Stored XSS via Special:Browse Keyword Property

Medium 5.3 Published 27 Oct 2026 Updated 27 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116887?

CVE-2026-116887 is a medium-severity vulnerability in SemanticMediaWiki, published on 27 Oct 2026.

Official description

Semantic MediaWiki from 3.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject HTML through Keyword-typed property values rendered unescaped on Special:Browse. Attackers can annotate a Keyword property with an event-handler payload that executes JavaScript in viewers' sessions, including administrators, to read tokens and perform actions.

Weakness: CWE-79

Which versions are affected by CVE-2026-116887?

How do I fix CVE-2026-116887?

No fix has been published for CVE-2026-116887 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116887 being exploited?

There is no known exploitation of CVE-2026-116887 in the wild and no public exploit code.

Sources

Also known as GHSA-4vg5-q837-f88q, GHSA-r7xx-9gqh-q8p9.