Description


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 remains buffered while the decoder waits for bytes that cannot make the value valid, allowing a remote peer to exhaust memory. This issue is fixed in version 6.1.0.

Related CPE's


Could not find any relations

Weaknesses



CWE-228

CVSS impact metrics


CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

5.9 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-08T17:17:15.850Z

15 hours ago

Last modified

2026-10-08T20:48:36.970Z

12 hours ago