{"id":"CVE-2026-32284","summary":"Denial of service in github.com/shamaton/msgpack","details":"The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.","aliases":["GHSA-h9q6-hc68-35rp","GO-2026-4513","GO-2026-4740"],"modified":"2026-07-08T07:45:35.180539702Z","published":"2026-03-26T19:40:51.686Z","related":["CGA-xwfm-7hvm-p6pw","SUSE-SU-2026:1135-1"],"database_specific":{"cna_assigner":"Go","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32284.json"},"references":[{"type":"WEB","url":"https://pkg.go.dev"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-4513"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32284.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32284"},{"type":"REPORT","url":"https://github.com/golang/vulndb/issues/4513"},{"type":"REPORT","url":"https://github.com/shamaton/msgpack/issues/59"},{"type":"EVIDENCE","url":"https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/shamaton/msgpack","events":[{"introduced":"0"},{"last_affected":"a605fc6e40e4e17041a2d090cbd94f3966b57605"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"last_affected":"3.1.2"}],"cpe":"cpe:2.3:a:shamaton:msgpack:*:*:*:*:*:go:*:*"}}],"versions":["v3.1.2","v3.1.1","v3.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32284.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}