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ZITADEL administrators can enable a setting called \"Ignoring unknown usernames\" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report \"Username or Password invalid\". While the setting was correctly respected during the login flow, the user's username was normalized leading to a disclosure of the user's existence. This vulnerability is fixed in 2.71.6, 2.70.8, 2.69.9, 2.68.9, 2.67.13, 2.66.16, 2.65.7, 2.64.6, and 2.63.9."}, {"lang": "es", "value": "Zitadel es un software de infraestructura de identidad de c\u00f3digo abierto. Los administradores de ZITADEL pueden habilitar la configuraci\u00f3n \"Ignorar nombres de usuario desconocidos\", que ayuda a mitigar los ataques que intentan adivinar o enumerar nombres de usuario. Si se habilita, ZITADEL mostrar\u00e1 la solicitud de contrase\u00f1a incluso si el usuario no existe e informar\u00e1 \"Nombre de usuario o contrase\u00f1a no v\u00e1lidos\". Si bien la configuraci\u00f3n se respet\u00f3 correctamente durante el inicio de sesi\u00f3n, el nombre de usuario se normaliz\u00f3, lo que revel\u00f3 su existencia. Esta vulnerabilidad est\u00e1 corregida en las versiones 2.71.6, 2.70.8, 2.69.9, 2.68.9, 2.67.13, 2.66.16, 2.65.7, 2.64.6 y 2.63.9."}], "id": "CVE-2025-31124", "lastModified": "2025-08-26T17:15:41.330", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-03-31T20:15:15.707", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/zitadel/zitadel/commit/14de8ecac2afafee4975ed7ac26f3ca4a2b0f82c"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.63.9"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.64.6"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.65.7"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.66.16"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.67.13"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.68.9"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.69.9"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.70.8"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/zitadel/zitadel/releases/tag/v2.71.6"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-67m4-8g4w-633q"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-204"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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