Is CVE-2026-116881 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116881?

CVE-2026-116881 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-116881

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.