{
  "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-2026-33558",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-33558",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-20T13:20:38.059Z",
    "updatedAt": "2026-04-20T14:20:41.640Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "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 Kafka, Apache Kafka Clients: Information Exposure Through Network Client Log Output",
      "summary": "Information exposure vulnerability has been identified in Apache Kafka.\n\nThe NetworkClient component will output entire requests and responses information in the DEBUG log level in the logs. By default, the log level is set to INFO level. If the DEBUG level is enabled, the sensitive information will be exposed via the requests and responses output log. The entire lists of impacted requests and responses are:\n\n\n  *  AlterConfigsRequest\n\n  *  AlterUserScramCredentialsRequest\n\n  *  ExpireDelegationTokenRequest\n\n  *  IncrementalAlterConfigsRequest\n\n  *  RenewDelegationTokenRequest\n\n  *  SaslAuthenticateRequest\n\n  *  createDelegationTokenResponse\n\n  *  describeDelegationTokenResponse\n\n  *  SaslAuthenticateResponse\n\n\nThis issue affects Apache Kafka: from any version supported the listed API above through v3.9.1, v4.0.0. We advise the Kafka users to upgrade to v3.9.2, v4.0.1, or later to avoid this vulnerability.",
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Kafka",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0.11.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.9.1"
            },
            {
              "version": "4.0.0",
              "status": "affected",
              "versionType": "semver"
            }
          ]
        },
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Kafka Clients",
          "packageName": "org.apache.kafka:kafka-clients",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0.11.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "3.9.1"
            },
            {
              "version": "4.0.0",
              "status": "affected",
              "versionType": "semver"
            }
          ]
        }
      ]
    }
  }
}