{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116871","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-27T01:00:42.500Z","datePublished":"2026-10-27T10:23:26.290Z","dateUpdated":"2026-10-27T10:26:38.191Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-27T10:26:38.191Z"},"datePublic":"2026-09-28T00:00:00.000Z","title":"Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask","descriptions":[{"lang":"en","value":"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 nested query elements to the action=ask API to consume substantial CPU and memory, tying up request workers."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Uncontrolled Recursion","cweId":"CWE-674","type":"CWE"}]}],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","versionType":"semver","lessThan":"7.3.1"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"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"}]}]}],"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"}}],"references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-f8vw-wvm6-h2qq","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-f8vw-wvm6-h2qq)"},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/756492002752f937a9e115e14330b1181bd8c60c","tags":["patch"]},{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/e642f38c708dee7da5e885b8d40be8ffc56f3e87","tags":["patch"]},{"name":"VulnCheck Advisory: Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-uncontrolled-recursion-via-special-ask"}],"credits":[{"lang":"en","value":"AlpetGexha","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}