CVE-2026-116881 Semantic MediaWiki 3.0.0 before 7.3.1 XSS via Property-Value Autocomplete

Medium 5.3 Published 27 Oct 2026 Updated 27 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116881?

CVE-2026-116881 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 cross-site scripting vulnerability that allows attackers to inject markup by storing malicious semantic property values rendered unescaped in autocomplete suggestions. When another user opens the property-value autocomplete with an empty query, jquery.autocomplete.js concatenates the raw PValueLookup API value into HTML via container.html(), altering the dropdown and potentially executing script.

Weakness: CWE-79

Which versions are affected by CVE-2026-116881?

How do I fix CVE-2026-116881?

No fix has been published for CVE-2026-116881 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116881 being exploited?

There is no known exploitation of CVE-2026-116881 in the wild and no public exploit code.

Sources

Also known as GHSA-g72f-25hp-crjf, GHSA-mvpf-4wj8-2hwf.