Is CVE-2026-116888 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116888?

CVE-2026-116888 has a CVSS v3 severity of MEDIUM (4.8).

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CVE-2026-116888

Description

SemanticMediaWiki from 3.2.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with the smw-schemaedit right to inject markup through an unescaped property group schema canonical_name. Attackers can save a schema whose canonical_name holds script markup, which GroupFormatter renders unescaped in Special:Browse headings, executing JavaScript in viewers' sessions including administrators.