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cpe:2.3:a:msgpack:msgpack-python:*:*:*:*:*:*:*:*

part: a version: * update: *

VendorMsgpack (98df2d88-8a0c-5639-acc3-a3bfd250039f)
ProductMsgpack Python (8f552d89-76af-5567-94c6-58e927f93121)
Edition*
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Notes

Imported from gcve-enriched-dumps CVE data

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2026-114613 vulnerable 2026-11-03 10:15:53.068221 MessagePack: Unbounded memory leak in msgpack C extension on strict_map_key validation failure
HIGH (7.5)
MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.3, the msgpack-python C extension (msgpack._cmsgpack) leaks a decoded map value when deserialization rejects a key with strict_map_key=True (the default). Repeated malformed inputs can cause unbounded process memory growth and denial of service in applications that deserialize attacker-controlled MessagePack data. Both unpackb() and the streaming Unpacker API are affected. The pure-Python fallback does not exhibit this leak in the reported tests. This issue is fixed in version 1.2.3.
Published: 2026-10-22T18:22:40.544Z
Updated: 2026-10-23T21:08:06.271Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2026-57585 vulnerable 2026-07-29 01:00:29.863767 MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error
HIGH (7.5)
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.
Published: 2026-06-30T21:36:23.418Z
Updated: 2026-07-01T14:54:36.191Z
Reference links
Imported from gcve-enriched-dumps CVE data

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