{"id":"CVE-2026-116872","title":"Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters","summary":"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 searc…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-407"],"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","affected":["SemanticMediaWiki >= 3.0.0 < 7.3.1"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T10:26:38.802Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116872","references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-j2r2-7qpg-p675","label":"GitHub Security Advisory (GHSA-j2r2-7qpg-p675)"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/c2bf1699dec4016e21ce52613152bda799ce87d4"},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-denial-of-service-via-special-search-compact-filters","label":"VulnCheck Advisory: Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:11:59.283Z","slug":"CVE-2026-116872","body":"## Overview\n\nSemantic 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.\n\n## Affected\n\n- `SemanticMediaWiki >= 3.0.0 < 7.3.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}