PT-2026-54004 · Msgpackr · Msgpack-Python
Published
2026-06-30
·
Updated
2026-06-30
·
CVE-2026-57585
CVSS v3.1
7.5
High
| Vector | 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.
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Msgpack-Python