CVE-2026-27944

{"id": "CVE-2026-27944", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "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}]}, "published": "2026-03-05T19:16:05.840", "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-306"}, {"lang": "en", "value": "CWE-311"}]}], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.3, the /api/backup endpoint is accessible without authentication and discloses the encryption keys required to decrypt the backup in the X-Backup-Security response header. This allows an unauthenticated attacker to download a full system backup containing sensitive data (user credentials, session tokens, SSL private keys, Nginx configurations) and decrypt it immediately. This issue has been patched in version 2.3.3."}, {"lang": "es", "value": "Nginx UI es una interfaz de usuario web para el servidor web Nginx. Antes de la versi\u00f3n 2.3.3, el endpoint /api/backup es accesible sin autenticaci\u00f3n y revela las claves de cifrado necesarias para descifrar la copia de seguridad en el encabezado de respuesta X-Backup-Security. Esto permite a un atacante no autenticado descargar una copia de seguridad completa del sistema que contiene datos sensibles (credenciales de usuario, tokens de sesi\u00f3n, claves privadas SSL, configuraciones de Nginx) y descifrarla inmediatamente. Este problema ha sido parcheado en la versi\u00f3n 2.3.3."}], "lastModified": "2026-03-10T18:11:27.450", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AA731011-DD7D-446C-99D7-120A6EBDD668", "versionEndExcluding": "2.3.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}