CVE-2026-57585

A flaw was found in MessagePack for Python, a serializer implementation. This vulnerability, categorized as a Use-After-Free CWE-416, occurs when the Unpacker component is reused after an error. A remote attacker could exploit this by repeatedly providing untrusted input, leading to an...

CVE-2026-57585

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...