{"id":"CVE-2026-116872","state":"PUBLISHED","title":"Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters","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.","publishedAt":"2026-10-27T10:23:26.944Z","updatedAt":"2026-10-27T10:26:38.802Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["SemanticMediaWiki SemanticMediaWiki"],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":["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"],"weaknesses":["CWE-407"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116872.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116872","state":"PUBLISHED","datePublished":"2026-10-27T10:23:26.944Z","dateUpdated":"2026-10-27T10:26:38.802Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-27T01:00:42.500Z"},"containers":{"cna":{"title":"Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-j2r2-7qpg-p675","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-j2r2-7qpg-p675)"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/c2bf1699dec4016e21ce52613152bda799ce87d4","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-denial-of-service-via-special-search-compact-filters","name":"VulnCheck Advisory: Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-407","lang":"en","description":"Inefficient Algorithmic Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-27T10:26:38.802Z"},"datePublic":"2026-09-28T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"7.3.1"}]}]}],"credits":[{"lang":"en","value":"AlpetGexha","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}