{"schema":"threatline.record/2","record":{"id":"CVE-2026-116878","aliases":["GHSA-wh64-r5x2-vjgf"],"summary":"Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilarity","details":"Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows anonymous attackers to force quadratic computation by supplying a zero limit to Special:PropertyLabelSimilarity. Attackers can send repeated requests with limit=0 to bypass the SQL LIMIT and trigger pairwise similar_text() comparisons, exhausting PHP CPU, memory, and database connections.","categories":["Unclassified"],"product":"SemanticMediaWiki","vendor":"SemanticMediaWiki","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116878","source_modified_at":"2026-10-27T14:13:22.135Z","fetched_at":"2026-10-27T16:27:21.584480Z","product":"SemanticMediaWiki","vendor":"SemanticMediaWiki","versions":[{"version":"2.5.0","status":"affected","versionType":"semver","lessThan":"7.3.1"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116878","source_modified_at":"2026-10-27T14:13:22.135Z","fetched_at":"2026-10-27T16:27:21.584480Z","package":{"name":"SemanticMediaWiki","ecosystem":null},"version":"7.3.1","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-27T10:23:30.985Z","modified_at":"2026-10-27T14:13:22.135Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116878","fetched_at":"2026-10-27T16:27:21.584480Z","source_modified_at":"2026-10-27T14:13:22.135Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-wh64-r5x2-vjgf","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/15ed8489a4ca142ea5417d0c4403dbbe0a3ee3f5","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-special-propertylabelsimilarity","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-27T13:46:20.630387Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-27T14:13:22.135Z","content_hash":"8b19a90fb0d0bc08c16684c4b6fc1221d1e3a7587da8b311923e79dbf9841597"}}