CVE-2026-100300

{
  "etk_id": "ETK-2026-3487",
  "cve_id": "CVE-2026-100300",
  "display_id": "CVE-2026-100300",
  "ghsa_id": "GHSA-7xqw-mw2f-8c7x",
  "euvd_id": "EUVD-2026-116868",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Persistent denial of service in Apache ZooKeeper quota handling",
  "summary": "Apache ZooKeeper through 3.9.6 is affected by improper exceptional-condition handling in its quota subsystem. An attacker able to write beneath the quota subtree can stop critical request processing and leave the server data directory unable to restart; default deployments may permit such writes without authentication.",
  "mitigation": "Upgrade ZooKeeper to 3.8.8 or 3.9.7. Restrict write access to the quota subtree, especially where default world-writable permissions are present.",
  "vendor": "Apache Software Foundation",
  "product": "Apache ZooKeeper",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.9.0, <= 3.9.6",
        ">= 3.8.0, <= 3.8.7"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.apache.zookeeper:zookeeper",
      "purl": null
    }
  ],
  "cwes": [
    755
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 50.65683438333333,
  "t0_at": "2026-11-04T10:45:14.858000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T10:45:14.858000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-04T10:45:14.858000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-100300"
    }
  }
}