{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32284","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","state":"PUBLISHED","assignerShortName":"Go","dateReserved":"2026-03-11T16:38:46.556Z","datePublished":"2026-03-26T19:40:51.686Z","dateUpdated":"2026-03-30T14:55:25.762Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","shortName":"Go","dateUpdated":"2026-03-26T19:40:51.686Z"},"title":"Denial of service in github.com/shamaton/msgpack","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"github.com/shamaton/msgpack","product":"github.com/shamaton/msgpack","collectionURL":"https://pkg.go.dev","packageName":"github.com/shamaton/msgpack","programRoutines":[{"name":"Unmarshal"},{"name":"UnmarshalAsMap"},{"name":"UnmarshalAsArray"},{"name":"DecodeStructAsArray"},{"name":"DecodeStructAsMap"}],"defaultStatus":"affected"},{"vendor":"github.com/shamaton/msgpack/v2","product":"github.com/shamaton/msgpack/v2","collectionURL":"https://pkg.go.dev","packageName":"github.com/shamaton/msgpack/v2","programRoutines":[{"name":"Unmarshal"},{"name":"UnmarshalAsMap"},{"name":"UnmarshalAsArray"}],"defaultStatus":"affected"},{"vendor":"github.com/shamaton/msgpack/v3","product":"github.com/shamaton/msgpack/v3","collectionURL":"https://pkg.go.dev","packageName":"github.com/shamaton/msgpack/v3","programRoutines":[{"name":"Unmarshal"},{"name":"UnmarshalAsMap"},{"name":"UnmarshalAsArray"}],"defaultStatus":"affected"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-125: Out-of-bounds Read"}]}],"references":[{"url":"https://github.com/shamaton/msgpack/issues/59"},{"url":"https://github.com/golang/vulndb/issues/4513"},{"url":"https://pkg.go.dev/vuln/GO-2026-4513"}]},"adp":[{"references":[{"url":"https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-30T14:04:12.686407Z","id":"CVE-2026-32284","options":[{"Exploitation":"poc"},{"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":"2026-03-30T14:55:25.762Z"}}]}}