CVE-2026-27944

{
    "cve": {
        "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"
    }
}