CVE-2026-23906

{"id": "CVE-2026-23906", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23906", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-02-10T15:40:50.988837Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache Druid", "versions": [{"status": "affected", "version": "0.17.0", "lessThan": "36.0.0", "versionType": "semver"}], "packageName": "org.apache.druid.extensions:druid-basic-security", "defaultStatus": "unaffected"}]}], "published": "2026-02-10T10:15:59.427", "references": [{"url": "https://lists.apache.org/thread/2x9rv3kv6t1p577lvq4z0rl0zlt9g4sr", "tags": ["Mailing List", "Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/02/09/5", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-287"}]}], "descriptions": [{"lang": "en", "value": "Affected Products and Versions\n * Apache Druid\n * Affected Versions: 0.17.0 through 35.x (all versions prior to 36.0.0)\n * Prerequisites: * druid-basic-security extension enabled\n * LDAP authenticator configured\n * Underlying LDAP server permits anonymous bind\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\n\n\n\n\n\n\nVulnerability Description\n\nAn authentication bypass vulnerability exists in Apache Druid when using the druid-basic-security extension with LDAP authentication. If the underlying LDAP server is configured to allow anonymous\nbinds, an attacker can bypass authentication by providing an existing username with an empty password. This allows unauthorized access to otherwise restricted Druid resources without valid credentials.\n\nThe vulnerability stems from improper validation of LDAP authentication responses when anonymous binds are permitted, effectively treating anonymous bind success as valid user authentication. \n\nImpact\n\nA remote, unauthenticated attacker can:\n * Gain unauthorized access to the Apache Druid cluster\n * Access sensitive data stored in Druid datasources\n * Execute queries and potentially manipulate data\n * Access administrative interfaces if the bypassed account has elevated privileges\n * Completely compromise the confidentiality, integrity, and availability of the Druid deployment\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\n\nMitigation\n\u00a0\nImmediate Mitigation (No Druid Upgrade Required): \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \n * Disable anonymous bind on your LDAP server. This prevents the vulnerability from being exploitable and is the recommended immediate action.\n\n\n\nResolution\n * Upgrade Apache Druid to version 36.0.0 or later, which includes fixes to properly reject anonymous LDAP bind attempts."}, {"lang": "es", "value": "Productos y Versiones Afectados\n * Apache Druid\n * Versiones Afectadas: 0.17.0 hasta 35.x (todas las versiones anteriores a 36.0.0)\n * Prerrequisitos:\n * extensi\u00f3n druid-basic-security habilitada\n * autenticador LDAP configurado\n * El servidor LDAP subyacente permite el enlace an\u00f3nimo\n\nDescripci\u00f3n de la vulnerabilidad\n\nExiste una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n en Apache Druid al usar la extensi\u00f3n druid-basic-security con autenticaci\u00f3n LDAP. Si el servidor LDAP subyacente est\u00e1 configurado para permitir enlaces an\u00f3nimos, un atacante puede omitir la autenticaci\u00f3n proporcionando un nombre de usuario existente con una contrase\u00f1a vac\u00eda. Esto permite el acceso no autorizado a recursos de Druid que de otro modo estar\u00edan restringidos sin credenciales v\u00e1lidas.\n\nLa vulnerabilidad se deriva de una validaci\u00f3n incorrecta de las respuestas de autenticaci\u00f3n LDAP cuando se permiten los enlaces an\u00f3nimos, tratando efectivamente el \u00e9xito del enlace an\u00f3nimo como una autenticaci\u00f3n de usuario v\u00e1lida.\n\nImpacto\n\nUn atacante remoto no autenticado puede:\n * Obtener acceso no autorizado al cl\u00faster de Apache Druid\n * Acceder a datos sensibles almacenados en las fuentes de datos de Druid\n * Ejecutar consultas y potencialmente manipular datos\n * Acceder a interfaces administrativas si la cuenta omitida tiene privilegios elevados\n * Comprometer completamente la confidencialidad, integridad y disponibilidad de la implementaci\u00f3n de Druid\n\nMitigaci\u00f3n\n\nMitigaci\u00f3n Inmediata (No se requiere actualizaci\u00f3n de Druid):\n * Deshabilite el enlace an\u00f3nimo en su servidor LDAP. Esto evita que la vulnerabilidad sea explotable y es la acci\u00f3n inmediata recomendada.\n\nResoluci\u00f3n\n * Actualice Apache Druid a la versi\u00f3n 36.0.0 o posterior, que incluye correcciones para rechazar correctamente los intentos de enlace an\u00f3nimo de LDAP."}], "lastModified": "2026-06-17T10:22:17.367", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:druid:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1EAD572D-067D-4CCC-9C8E-B4439C08B80D", "versionEndExcluding": "36.0.0", "versionStartIncluding": "0.17.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}