msgpack5 vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary

CVE-2026-107302Highmsgpack5: msgpack5: Truncated map32 headers throw an unexpected error CVE-2026-107300Highmsgpack5: msgpack5: Many buffered values can exhaust the streaming decoder stack CVE-2026-107299Mediummsgpack5: msgpack5: Reserved byte can cause unbounded stream buffering CVE-2026-107301Mediummsgpack5: msgpack5: Partial options disable prototype protection CVE-2026-107298Mediummsgpack5: msgpack5: Deeply nested input can exhaust the decoder stack CVE-2026-107297Mediummsgpack5: msgpack5: Quadratic parsing in the streaming decoder CVE-2026-107296Lowmsgpack5: msgpack5: Decoding negative int64 values mutates the input buffer CVE-2021-21368Mediummsgpack5: Prototype poisoning

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