CVE-2026-33558

{"id": "CVE-2026-33558", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33558", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-20T14:20:28.073658Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache Kafka", "versions": [{"status": "affected", "version": "0.11.0", "versionType": "semver", "lessThanOrEqual": "3.9.1"}, {"status": "affected", "version": "4.0.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache Kafka Clients", "versions": [{"status": "affected", "version": "0.11.0", "versionType": "semver", "lessThanOrEqual": "3.9.1"}, {"status": "affected", "version": "4.0.0", "versionType": "semver"}], "packageName": "org.apache.kafka:kafka-clients", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}]}], "published": "2026-04-20T14:16:19.010", "references": [{"url": "https://kafka.apache.org/cve-list", "tags": ["Vendor Advisory"], "source": "security@apache.org"}, {"url": "https://lists.apache.org/thread/pz5g4ky3h0k91tfd14p0dzqjp80960kl", "tags": ["Mitigation", "Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/17/3", "tags": ["Mailing List"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-533"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad de exposici\u00f3n de informaci\u00f3n en Apache Kafka.\n\nEl componente NetworkClient registrar\u00e1 informaci\u00f3n completa de solicitudes y respuestas en el nivel de registro DEBUG en los registros. Por defecto, el nivel de registro est\u00e1 configurado en el nivel INFO. Si el nivel DEBUG est\u00e1 habilitado, la informaci\u00f3n sensible ser\u00e1 expuesta a trav\u00e9s del registro de salida de solicitudes y respuestas. Las listas completas de solicitudes y respuestas afectadas son:\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\nEste problema afecta a Apache Kafka: desde cualquier versi\u00f3n que soporte la API listada anteriormente hasta la v3.9.1, v4.0.0. Aconsejamos a los usuarios de Kafka que actualicen a la v3.9.2, v4.0.1, o posterior para evitar esta vulnerabilidad."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E4291507-DE2A-4AD8-A1D4-4AC531371EC2", "versionEndExcluding": "3.9.2", "versionStartIncluding": "0.11.0.0"}, {"criteria": "cpe:2.3:a:apache:kafka:4.0.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F2A086A-9ABC-4D24-8810-4C09363A795D"}, {"criteria": "cpe:2.3:a:apache:kafka:4.0.0:rc0:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0051B45F-653D-4B63-8433-5A549431D60A"}, {"criteria": "cpe:2.3:a:apache:kafka:4.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "038C0B8B-A1D6-456C-B626-330A3E38D0DC"}, {"criteria": "cpe:2.3:a:apache:kafka:4.0.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9A03CBA4-3000-452A-B92E-444281E85998"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}