{"id":"CVE-2023-37463","summary":"Quadratic complexity bugs may lead to a denial of service","details":"cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.\n","aliases":["GHSA-w4qg-3vf7-m9x5"],"modified":"2026-03-20T12:21:16.767454Z","published":"2023-07-13T19:22:16.654Z","related":["openSUSE-SU-2024:13136-1"],"database_specific":{"cwe_ids":["CWE-400"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37463.json"},"references":[{"type":"WEB","url":"https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37463.json"},{"type":"ADVISORY","url":"https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-37463"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/github/cmark-gfm","events":[{"introduced":"0"},{"fixed":"f94b7ed311688b4e14ed10904af98d4536414267"}]}],"versions":["0.27.1.gfm.2","0.27.1.gfm.3","0.27.1.gfm.4","0.28.0.gfm.10","0.28.0.gfm.11","0.28.0.gfm.5","0.28.0.gfm.6","0.28.0.gfm.7","0.28.0.gfm.8","0.28.0.gfm.9","0.28.3.gfm.12","0.28.3.gfm.13","0.28.3.gfm.14","0.28.3.gfm.15","0.28.3.gfm.16","0.28.3.gfm.17","0.28.3.gfm.18","0.28.3.gfm.19","0.28.3.gfm.20","0.29.0.gfm.0","0.29.0.gfm.1","0.29.0.gfm.10","0.29.0.gfm.11","0.29.0.gfm.2","0.29.0.gfm.3","0.29.0.gfm.4","0.29.0.gfm.5","0.29.0.gfm.6","0.29.0.gfm.7","0.29.0.gfm.8","0.29.0.gfm.9"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-37463.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H"}]}