msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder treats the reserved MessagePack byte 0xc1 as incomplete input instead of invalid input. When 0xc1 begins a stream, subsequent data re…
Exact source revision recorded 1 Nov 2026 02:10:18 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-95110
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datePublished: Oct 8, 2026, 5:09:47 PM
dateUpdated: Oct 9, 2026, 3:15:00 PM
1 related source bulletins · separate from aliases
msrc_CVE-2026-107299: msgpack5: Reserved byte can cause unbounded stream buffering
CVE-2026-107299
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