{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-107302", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-07T15:53:23.587Z", "datePublished": "2026-10-08T17:14:19.514Z", "dateUpdated": "2026-10-08T17:32:23.572Z"}, "containers": {"cna": {"title": "msgpack5: Truncated map32 headers throw an unexpected error", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/mcollina/msgpack5/security/advisories/GHSA-8f34-f56x-9xph", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/mcollina/msgpack5/security/advisories/GHSA-8f34-f56x-9xph"}, {"name": "https://github.com/mcollina/msgpack5/commit/15443a1f2aa682a6aa37f1705ac628de5b866ad1", "tags": ["x_refsource_MISC"], "url": "https://github.com/mcollina/msgpack5/commit/15443a1f2aa682a6aa37f1705ac628de5b866ad1"}, {"name": "https://github.com/mcollina/msgpack5/releases/tag/v6.1.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/mcollina/msgpack5/releases/tag/v6.1.0"}], "affected": [{"vendor": "mcollina", "product": "msgpack5", "versions": [{"version": "< 6.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-08T17:14:19.514Z"}, "descriptions": [{"lang": "en", "value": "msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the decoder reads the four-byte length of a map32 value before validating that the complete five-byte header is available. A truncated map32 header therefore causes a checked out-of-bounds buffer read and throws RangeError instead of IncompleteBufferError, which can unexpectedly terminate a request, stream, or worker in applications that wait for additional bytes after IncompleteBufferError. There is no adjacent-memory disclosure because the buffer implementation checks bounds. This issue is fixed in version 6.1.0."}], "source": {"advisory": "GHSA-8f34-f56x-9xph", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-08T17:32:15.263797Z", "id": "CVE-2026-107302", "options": [{"Exploitation": "none"}, {"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": "2026-10-08T17:32:23.572Z"}}]}}

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