Is CVE-2026-116879 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116879?

CVE-2026-116879 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-116879

Description

Semantic MediaWiki from 7.3.0 before 7.3.1 contains a missing authorization vulnerability in the smwtask update task that allows users with edit rights to force semantic updates on arbitrary pages. Attackers can supply a serialized subject parameter for a restricted page to trigger forced reparsing, semantic-store writes, and resource-intensive dependency work.