CVE-2026-57585

7.5 Élevée

Publiée le 01/07/2026 à 00:16 · Modifiée le 06/08/2026 à 17:51 · Analysée par le NVD · Source : security-advisories@github.com

Description

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

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Produits concernés

msgpack-python
Msgpack messagepack

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.5 Élevée	security-advisories@github.com	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-416

Références

https://github.com/msgpack/msgpack-python/commit/2c56ddb5d0025ed481d962c0f5d62d19dec7476d Patch
https://github.com/msgpack/msgpack-python/security/advisories/GHSA-6v7p-g79w-8964 MitigationVendor Advisory

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories