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CVE-2026-57585

—
CVSS 3.1
7.5 high
EPSS
<1%p40
Published
()
Modified
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.

Vendors
msgpack
Products
messagepack
Weakness
CWE-416
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.5%)

In the news

No ingested article mentions this CVE yet.