{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-44981",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-44981",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-10-11T11:55:47.925Z",
    "updatedAt": "2025-04-23T16:15:15.138Z",
    "importedAt": "2026-10-24T01:56:58.683Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Apache ZooKeeper: Authorization bypass in SASL Quorum Peer Authentication",
      "summary": "Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in ZooKeeper (quorum.auth.enableSasl=true), the authorization is done by verifying that the instance part in SASL authentication ID is listed in zoo.cfg server list. The instance part in SASL auth ID is optional and if it's missing, like 'eve@EXAMPLE.COM', the authorization check will be skipped. As a result an arbitrary endpoint could join the cluster and begin propagating counterfeit changes to the leader, essentially giving it complete read-write access to the data tree. Quorum Peer authentication is not enabled by default.\n\nUsers are recommended to upgrade to version 3.9.1, 3.8.3, 3.7.2, which fixes the issue.\n\nAlternately ensure the ensemble election/quorum communication is protected by a firewall as this will mitigate the issue.\n\nSee the documentation for more details on correct cluster administration.",
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache ZooKeeper",
          "packageName": "org.apache.zookeeper:zookeeper",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.9.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "3.9.1"
            },
            {
              "version": "3.8.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "3.8.2"
            },
            {
              "version": "3.7.0",
              "status": "affected",
              "versionType": "maven",
              "lessThanOrEqual": "3.7.1"
            },
            {
              "version": "0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "3.7.0"
            }
          ]
        }
      ]
    }
  }
}