CVE-2026-27944

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27944", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-25T03:11:36.690Z", "datePublished": "2026-03-05T16:28:13.988Z", "dateUpdated": "2026-03-19T14:49:05.173Z"}, "containers": {"cna": {"title": "Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure", "problemTypes": [{"descriptions": [{"cweId": "CWE-311", "lang": "en", "description": "CWE-311: Missing Encryption of Sensitive Data", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762"}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"version": "< 2.3.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-05T16:28:13.988Z"}, "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."}], "source": {"advisory": "GHSA-g9w5-qffc-6762", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-19T14:48:53.820842Z", "id": "CVE-2026-27944", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-19T14:49:05.173Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-27944", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-19T14:48:53.820842Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-06T16:01:37.626Z"}}], "cna": {"title": "Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure", "source": {"advisory": "GHSA-g9w5-qffc-6762", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"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"}}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"status": "affected", "version": "< 2.3.3"}]}], "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762", "name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762", "tags": ["x_refsource_CONFIRM"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-311", "description": "CWE-311: Missing Encryption of Sensitive Data"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306: Missing Authentication for Critical Function"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-05T16:28:13.988Z"}}}, "cveMetadata": {"cveId": "CVE-2026-27944", "state": "PUBLISHED", "dateUpdated": "2026-03-19T14:49:05.173Z", "dateReserved": "2026-02-25T03:11:36.690Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-05T16:28:13.988Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "nginx-ui", "vendor": "0xJacky", "versions": [{"status": "affected", "version": "< 2.3.3"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*", "matchCriteriaId": "AA731011-DD7D-446C-99D7-120A6EBDD668", "versionEndExcluding": "2.3.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2026-27944", "lastModified": "2026-06-17T10:27:57.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27944", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-19T14:48:53.820842Z", "version": "2.0.3"}}]}, "published": "2026-03-05T19:16:05.840", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}, {"lang": "en", "value": "CWE-311"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.3.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "nginx-ui", "source": "cna", "vendor": "0xJacky"}, "product": "nginx-ui", "vendor": "0xjacky"}], "created": "2026-03-06T15:01:34.313161+00:00", "updated": "2026-10-25T22:15:14.435471+00:00", "vendors": ["0xjacky", "0xjacky$PRODUCT$nginx-ui"]}