Security Advisory

CVE-2026-57585

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-30 21:36:23

Last updated 2026-07-01 14:54:36

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

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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