{
  "cveId": "CVE-2026-79993",
  "url": "https://patchblox.com/security/cve/CVE-2026-79993",
  "summary": "CVE-2026-79993 is fixed in zookeeper on 1 platform by DEBIAN-CVE-2026-79993 (version 3.9.6-1), released September 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "zookeeper: The \u0060deleteContainer\u0060 opcode (0x14/20) is processed without verifying the caller\u0027s ACL permissions, allowing any auth...",
  "description": "The \u0060deleteContainer\u0060 opcode (0x14/20) is processed without verifying the caller\u0027s ACL permissions, allowing any authenticated client to delete specific znodes in the data tree regardless of the ACL restrictions on the znode or its parent. This opcode is considered internal-only and the official client doesn\u0027t have API for it, but a\u00A0client that can open a plain TCP session on the ZooKeeper client port (2181 by default)\u00A0- with NO authentication and NO ACL permissions - can delete any\u00A0empty persistent znode (including regular persistent nodes, container\u00A0nodes, and TTL nodes) by issuing the raw protocol OpCode deleteContainer (20).\u00A0The deleteContainer request path completely skips both the session check and\u00A0the DELETE ACL check that are enforced by the regular delete (OpCode 2) path.\u00A0This is an authorization bypass / ACL enforcement bug.  This issue affects Apache ZooKeeper: from 3.9.0 through 3.9.5, from 3.8.0 through 3.8.6.  Users are recommended to upgrade to version 3.9.6 or 3.8.7, which fixes the issue.",
  "published": "2026-09-16T10:16:53Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00603,
  "epssPercentile": 0.49113,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "zookeeper",
      "release": "Debian 14",
      "fixedVersion": "3.9.6-1",
      "fix": "DEBIAN-CVE-2026-79993",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-79993",
      "released": "2026-09-26T19:52:05Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}