{"api_version":"1","generated_at":"2026-09-24T21:58:23+00:00","cve":"CVE-2026-88359","urls":{"html":"https://cve.report/CVE-2026-88359","api":"https://cve.report/api/cve/CVE-2026-88359.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-88359","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-88359"},"summary":{"title":"CVE-2026-88359","description":"libfyaml 0.9.6 contains a stack exhaustion vulnerability in fy_atom_iter_format(). When processing a specially crafted YAML document containing a very large literal or folded block scalar, the function repeatedly grows an internal buffer using alloca() inside a loop. The allocated stack memory is not released until the function returns, causing cumulative stack growth that can exceed the process stack limit and result in SIGSEGV and denial of service.","state":"PUBLISHED","assigner":"mitre","published_at":"2026-09-24 14:18:18","updated_at":"2026-09-24 21:08:55"},"problem_types":["n/a"],"metrics":[],"references":[{"url":"https://github.com/pantoniou/libfyaml/commit/20502068902d58c076da873117985798df2c7e74","name":"https://github.com/pantoniou/libfyaml/commit/20502068902d58c076da873117985798df2c7e74","refsource":"cve@mitre.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/pantoniou/libfyaml/issues/315","name":"https://github.com/pantoniou/libfyaml/issues/315","refsource":"cve@mitre.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/pantoniou/libfyaml/commit/93741a7c9331da9da65ef7a25f2d7d6a817a1c29","name":"https://github.com/pantoniou/libfyaml/commit/93741a7c9331da9da65ef7a25f2d7d6a817a1c29","refsource":"cve@mitre.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88359","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88359","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"libfyaml 0.9.6 contains a stack exhaustion vulnerability in fy_atom_iter_format(). When processing a specially crafted YAML document containing a very large literal or folded block scalar, the function repeatedly grows an internal buffer using alloca() inside a loop. The allocated stack memory is not released until the function returns, causing cumulative stack growth that can exceed the process stack limit and result in SIGSEGV and denial of service."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2026-09-24T14:07:14.152Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"url":"https://github.com/pantoniou/libfyaml/issues/315"},{"url":"https://github.com/pantoniou/libfyaml/commit/93741a7c9331da9da65ef7a25f2d7d6a817a1c29"},{"url":"https://github.com/pantoniou/libfyaml/commit/20502068902d58c076da873117985798df2c7e74"}]}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2026-88359","datePublished":"2026-09-24T00:00:00.000Z","dateReserved":"2026-09-10T00:00:00.000Z","dateUpdated":"2026-09-24T14:07:14.152Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-24 14:18:18","lastModifiedDate":"2026-09-24 21:08:55","problem_types":["n/a"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"88359","Ordinal":"1","Title":"CVE-2026-88359","CVE":"CVE-2026-88359","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"88359","Ordinal":"1","NoteData":"libfyaml 0.9.6 contains a stack exhaustion vulnerability in fy_atom_iter_format(). When processing a specially crafted YAML document containing a very large literal or folded block scalar, the function repeatedly grows an internal buffer using alloca() inside a loop. The allocated stack memory is not released until the function returns, causing cumulative stack growth that can exceed the process stack limit and result in SIGSEGV and denial of service.","Type":"Description","Title":"CVE-2026-88359"}]}}}