Is CVE-2026-116887 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116887?

CVE-2026-116887 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-116887

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.