CVEvulnerability

CVE-2026-107299

5.9 MEDIUM Published 2026-10-08 Modified 2026-10-09 Official page ↗
Status
Deferred
Published
2026-10-08
Last modified
2026-10-09
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-228

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

Weakness · CWE (1)

  • CWE-228 Improper Handling of Syntactically Invalid Structure weakness

References