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CVE-2026-57585 MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error

🗓️ 30 Jun 2026 21:36:23Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

MessagePack Python: out-of-bounds read crash when reusing Unpacker after an error; fixed in 1.2.1.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-57585
30 Jun 202621:36
cve
EUVD
EUVD-2026-40423
30 Jun 202621:36
euvd
NVD
CVE-2026-57585
30 Jun 202622:16
nvd
Positive Technologies
PT-2026-54004
30 Jun 202600:00
ptsecurity
[
  {
    "vendor": "msgpack",
    "product": "msgpack-python",
    "versions": [
      {
        "version": "< 1.2.1",
        "status": "affected"
      }
    ]
  }
]

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