{"id":"CVE-2026-116871","title":"Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask","summary":"Semantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that processes nested query tokens before depth limits apply. Unauthenticated attackers can submit deeply ne…","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-674"],"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","affected":["SemanticMediaWiki >= 3.0.0 < 7.3.1"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T10:26:38.191Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116871","references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-f8vw-wvm6-h2qq","label":"GitHub Security Advisory (GHSA-f8vw-wvm6-h2qq)"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/756492002752f937a9e115e14330b1181bd8c60c"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/e642f38c708dee7da5e885b8d40be8ffc56f3e87"},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-uncontrolled-recursion-via-special-ask","label":"VulnCheck Advisory: Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:11:59.284Z","slug":"CVE-2026-116871","body":"## Overview\n\nSemantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that processes nested query tokens before depth limits apply. Unauthenticated attackers can submit deeply nested query elements to the action=ask API to consume substantial CPU and memory, tying up request workers.\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":[]}