{
  "cveId": "CVE-2026-57585",
  "url": "https://patchblox.com/security/cve/CVE-2026-57585",
  "summary": "CVE-2026-57585 is fixed in python-msgpack on 1 platform, first by OPENSUSE-SU-2026:21239-1, released July 5, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "python-msgpack: MessagePack is the serializer implementation for Python msgpack.org",
  "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.",
  "published": "2026-06-30T22:16:57Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00488,
  "epssPercentile": 0.42264,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "python-msgpack",
      "release": "Debian 14",
      "fixedVersion": "1.1.2-3",
      "fix": "DEBIAN-CVE-2026-57585",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-57585",
      "released": "2026-07-07T15:28:50Z"
    },
    {
      "platform": "linux",
      "product": "python-msgpack",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.1.0-160000.3.1",
      "fix": "OPENSUSE-SU-2026:21239-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21239-1",
      "released": "2026-07-05T18:50:52Z"
    },
    {
      "platform": "linux",
      "product": "python-msgpack",
      "release": "sles 15.6",
      "fixedVersion": "1.0.7-150600.3.5.1",
      "fix": "SUSE-SU-2026:4443-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4443-1",
      "released": "2026-10-05T08:18:49Z"
    },
    {
      "platform": "linux",
      "product": "python-msgpack",
      "release": "sles 15.7",
      "fixedVersion": "1.0.7-150600.3.5.1",
      "fix": "SUSE-SU-2026:4443-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4443-1",
      "released": "2026-10-05T08:18:49Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}