{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33169","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-17T21:17:08.888Z","datePublished":"2026-03-23T23:07:07.630Z","dateUpdated":"2026-03-24T15:46:43.465Z"},"containers":{"cna":{"title":"Rails Active Support has a possible ReDoS vulnerability in number_to_delimited","problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38"},{"name":"https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11"},{"name":"https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974"},{"name":"https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49"},{"name":"https://github.com/rails/rails/releases/tag/v7.2.3.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v7.2.3.1"},{"name":"https://github.com/rails/rails/releases/tag/v8.0.4.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v8.0.4.1"},{"name":"https://github.com/rails/rails/releases/tag/v8.1.2.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v8.1.2.1"}],"affected":[{"vendor":"rails","product":"activesupport","versions":[{"version":">= 8.1.0.beta1, < 8.1.2.1","status":"affected"},{"version":">= 8.0.0.beta1, < 8.0.4.1","status":"affected"},{"version":"< 7.2.3.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-23T23:19:24.387Z"},"descriptions":[{"lang":"en","value":"Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch."}],"source":{"advisory":"GHSA-cg4j-q9v8-6v38","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-24T15:45:49.354964Z","id":"CVE-2026-33169","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-24T15:46:43.465Z"}}]}}