CVE-2026-116872
CVE-2026-116872 · Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.7 · High · Fix available
- Published
- Updated
Affected products and versions
semanticmediawiki
- Versions
- ≥ 3.0.0, < 7.3.1: Affected (semver)
- 7.3.1: Not affected (semver)
Update to 7.3.1
Original sources
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-j2r2-7qpg-p675
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/c2bf1699dec4016e21ce52613152bda799ce87d4
- https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-denial-of-service-via-special-search-compact-filters
- https://nvd.nist.gov/vuln/detail/CVE-2026-116872