{"id":"CVE-2025-58446","state":"PUBLISHED","title":"xgrammar vulnerable to denial of service by huge enum grammar","description":"xgrammar is an open-source library for efficient, flexible, and portable structured generation. A grammar optimizer introduced in 0.1.23 processes large grammars (>100k characters) at very low rates, and can be used for DOS of model providers. This issue is fixed in version 0.1.24.","publishedAt":"2025-09-06T19:06:10.141Z","updatedAt":"2025-09-08T17:55:13.537Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["mlc-ai xgrammar"],"affected":[{"vendor":"mlc-ai","product":"xgrammar","versions":[{"version":"= 0.1.23, <  0.1.24","status":"affected"}]}],"references":["https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-9q5r-wfvf-rr7f","https://github.com/mlc-ai/xgrammar/commit/ced69c3ad2f8f61b516cc278a342e7c644383e27"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:09:39.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/58xxx/CVE-2025-58446.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-58446","state":"PUBLISHED","datePublished":"2025-09-06T19:06:10.141Z","dateUpdated":"2025-09-08T17:55:13.537Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-09-01T20:03:06.533Z"},"containers":{"cna":{"title":"xgrammar vulnerable to denial of service by huge enum grammar","descriptions":[{"lang":"en","value":"xgrammar is an open-source library for efficient, flexible, and portable structured generation. A grammar optimizer introduced in 0.1.23 processes large grammars (>100k characters) at very low rates, and can be used for DOS of model providers. This issue is fixed in version 0.1.24."}],"affected":[{"vendor":"mlc-ai","product":"xgrammar","versions":[{"version":"= 0.1.23, <  0.1.24","status":"affected"}]}],"references":[{"url":"https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-9q5r-wfvf-rr7f","name":"https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-9q5r-wfvf-rr7f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mlc-ai/xgrammar/commit/ced69c3ad2f8f61b516cc278a342e7c644383e27","name":"https://github.com/mlc-ai/xgrammar/commit/ced69c3ad2f8f61b516cc278a342e7c644383e27","tags":["x_refsource_MISC"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-09-06T19:06:10.141Z"},"source":{"advisory":"GHSA-9q5r-wfvf-rr7f","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-08T17:53:36.884881Z","id":"CVE-2025-58446","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-08T17:55:13.537Z"}}]}}}