CVE-2026-116872 Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters

High 8.7 Published 27 Oct 2026 Updated 27 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116872?

CVE-2026-116872 is a high-severity vulnerability in SemanticMediaWiki, published on 27 Oct 2026.

Official 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.

Weakness: CWE-407

Which versions are affected by CVE-2026-116872?

How do I fix CVE-2026-116872?

No fix has been published for CVE-2026-116872 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116872 being exploited?

There is no known exploitation of CVE-2026-116872 in the wild and no public exploit code.

Sources

Also known as GHSA-22p9-pjfx-9wj2, GHSA-j2r2-7qpg-p675.