Is CVE-2026-116872 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116872?

CVE-2026-116872 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-116872

Description

Semantic MediaWiki from 3.0.0 before 7.3.1 contains an algorithmic complexity vulnerability in TermParser::normalize_compact_form() that allows unauthenticated attackers to cause quadratic CPU consumption. Attackers can submit long search terms with many distinct in:(...) or has:(...) expressions to Special:Search to exhaust PHP search workers when the extended search engine is enabled.