PT-2026-54004 · Msgpackr · Msgpack-Python

Publicado 2026-06-30 · Atualizado 2026-06-30 · CVE-2026-57585

NVD

CVSS v3.1

7.5

Alta

Vetor base

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

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.

Correção

Use After Free

Enumeração de Fraquezas

CWE-416

Identificadores relacionados

CVE-2026-57585

Produtos afetados

Msgpack-Python

Referências · 3

• https://github.com/msgpack/msgpack-python/security/advisories/GHSA-6v7p-g79w-8964 · Nota
• https://github.com/msgpack/msgpack-python/commit/2c56ddb5d0025ed481d962c0f5d62d19dec7476d · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-57585 · Nota de Segurança