{"id":"CVE-2026-116872","aliases":["EUVD-2026-110700","GHSA-22p9-pjfx-9wj2","GHSA-j2r2-7qpg-p675"],"status":"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.","severity":{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00374,"percentile":0.31822,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-407"],"published":"2026-10-27T10:23:26Z","modified":"2026-11-04T01:22:07Z","products":[{"vendor":"semantic-mediawiki","product":"semantic_mediawiki"},{"vendor":"semanticmediawiki","product":"semanticmediawiki"}],"references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-j2r2-7qpg-p675","tags":["vendor-advisory","exploit","Exploit","Vendor Advisory","Mitigation","advisory"]},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/c2bf1699dec4016e21ce52613152bda799ce87d4","tags":["patch","Patch","fix"]},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-denial-of-service-via-special-search-compact-filters","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116872","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-22p9-pjfx-9wj2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116872.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-116872","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.","status":"published","published":"2026-10-27T10:23:26.944Z","modified":"2026-10-31T02:30:17.617Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:20:03.4818Z"}],"euvd":[{"id":"EUVD-2026-110700","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.","status":"published","published":"2026-10-27T10:23:26Z","modified":"2026-10-31T02:30:17Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"updated_at":"2026-11-02T16:59:01.198534Z"}],"ghsa":[{"id":"GHSA-22p9-pjfx-9wj2","title":"Semantic MediaWiki from 3.0.0 before 7.3.1 contains an algorithmic complexity vulnerability in...","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.","status":"published","published":"2026-10-27T12:30:46Z","modified":"2026-10-27T12:30:51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T15:14:28.758422Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-10-27T11:17:28.97Z","modified":"2026-11-04T01:22:07.183Z","cvss":[{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-407"],"updated_at":"2026-11-04T06:53:31.040671Z"}],"osv":[{"id":"CVE-2026-116872","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.","status":"published","published":"2026-10-27T10:23:26.944Z","modified":"2026-11-11T10:30:43.271594165Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"cwes":["CWE-407"],"updated_at":"2026-11-11T11:06:40.184337Z"}]}}