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Fri, 23 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-772 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Fri, 23 Oct 2026 04:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Msgpack
Msgpack msgpack-python |
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| Vendors & Products |
Msgpack
Msgpack msgpack-python |
Fri, 23 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | MessagePack: Unbounded memory leak in msgpack C extension on strict_map_key validation failure | |
| Weaknesses | CWE-401 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-22T18:22:40.544Z
Reserved: 2026-10-21T20:34:25.599Z
Link: CVE-2026-114613
No data.
Status : Received
Published: 2026-10-22T19:17:37.733
Modified: 2026-10-22T19:17:37.733
Link: CVE-2026-114613
OpenCVE Enrichment
Updated: 2026-10-23T13:30:07Z