{"id":"CVE-2026-116871","revision":"64a984862c7049c3b72e3d7f41f0d281","records":[{"revision":"64a984862c7049c3b72e3d7f41f0d281","observedAt":"2026-10-27T12:09:21.929+00:00","statement":{"source":"cve-program","id":"CVE-2026-116871","aliases":[],"title":"Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask","description":"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.","state":0,"publishedAt":"2026-10-27T10:23:26.29+00:00","modifiedAt":"2026-10-27T10:26:38.191+00:00","affected":[{"ecosystem":"Vendor product","name":"SemanticMediaWiki","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SemanticMediaWiki\",\n                    \"product\": \"SemanticMediaWiki\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"7.3.1\"\n                        },\n                        {\n                            \"version\": \"7.3.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 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","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-f8vw-wvm6-h2qq","https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/756492002752f937a9e115e14330b1181bd8c60c","https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/e642f38c708dee7da5e885b8d40be8ffc56f3e87","https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-uncontrolled-recursion-via-special-ask"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116871","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116871","identifiers":["CVE-2026-116871"]},"retained":false,"historicalAffected":[]}],"coverage":[]}