{"schema_version":"1.9.0","id":"CVE-2026-27944","published":"2026-03-05T16:28:13.988Z","modified":"2026-08-12T03:51:17.917304291Z","aliases":["GHSA-g9w5-qffc-6762","GO-2026-4614"],"related":["SUSE-SU-2026:1042-1","openSUSE-SU-2026:21483-1"],"summary":"Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure","details":"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.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/0xjacky/nginx-ui","events":[{"introduced":"0"},{"fixed":"e5da6dd96dae5567a7aaa27a4000a4762696d89c"}],"database_specific":{"cpe":"cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.3.3"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v2.3.2","v2.3.1","v2.3.0","v2.2.1","v2.2.0-patch.1","v2.2.0","v2.1.17","v2.1.16","v2.1.15","v2.1.14","v2.1.13","v2.1.12","v2.1.11","v2.1.10","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4-patch.1","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0-patch.1","v2.1.0","v2.1.0-rc.3","v2.1.0-rc.2","v2.1.0-rc.1","v2.1.0-beta.1","v2.0.2","v2.0.1","v2.0.0","v2.0.0-rc.8-patch.1","v2.0.0-rc.8","v2.0.0-rc.7-patch.8","v2.0.0-rc.7-patch.7","v2.0.0-rc.7-patch.6","v2.0.0-rc.7-patch.5","v2.0.0-rc.7-patch.4","v2.0.0-rc.7-patch.3","v2.0.0-rc.7-patch.2","v2.0.0-rc.7","v2.0.0-rc.6-patch.5","v2.0.0-rc.6-patch.4","v2.0.0-rc.6-patch.3","v2.0.0-rc.6-patch.2","v2.0.0-rc.6-patch.1","v2.0.0-rc.6","v2.0.0-rc.5","v2.0.0-rc.4-patch.3","v2.0.0-rc.4-patch.2","v2.0.0-rc.4-patch.1","v2.0.0-rc.4","v2.0.0-rc.3-patch.1","v2.0.0-rc.3","v2.0.0-rc.2","v2.0.0-rc.1-patch.2","v2.0.0-rc.1-patch.1","v2.0.0-rc.1","v2.0.0-beta.42","v2.0.0-beta.41","v2.0.0-beta.40","v2.0.0-beta.39","v2.0.0-beta.38","v2.0.0-beta.37-patch.5","v2.0.0-beta.37-patch.4","v2.0.0-beta.37-patch.3","v2.0.0-beta.37-patch.2","v2.0.0-beta.37-patch.1","v2.0.0-beta.37","v2.0.0-beta.36","v2.0.0-beta.35","v2.0.0-beta.34","v2.0.0-beta.33","v2.0.0-beta.32-patch.1","v2.0.0-beta.32","v2.0.0-beta.31","v2.0.0-beta.30","v2.0.0-beta.29","v2.0.0-beta.28","v2.0.0-beta.27","v2.0.0-beta.26","v2.0.0-beta.25-patch.2","v2.0.0-beta.25-patch.1","v2.0.0-beta.25","v2.0.0-beta.24","v2.0.0-beta.23-patch.2","v2.0.0-beta.23-patch.1","v2.0.0-beta.23","v2.0.0-beta.22","v2.0.0-beta.21","v2.0.0-beta.20","v2.0.0-beta.19","v2.0.0-beta.18-patch.2","v2.0.0-beta.18-patch.1","v2.0.0-beta.18","v2.0.0-beta.17","v2.0.0-beta.16","v2.0.0-beta.15","v2.0.0-beta.14","v2.0.0-beta.13-patch","v2.0.0-beta.13","v2.0.0-beta.12","v2.0.0-beta.11","v2.0.0-beta.10-patch","v2.0.0-beta.10","v2.0.0-beta.9","v2.0.0-beta.8-patch","v2.0.0-beta.8","v2.0.0-beta.7","v2.0.0-beta.6-patch.2","v2.0.0-beta.6-patch","v2.0.0-beta.6","v2.0.0-beta.5-patch","v2.0.0-beta.5","v2.0.0-beta.4-patch","v2.0.0-beta.4","v2.0.0-beta.3","v2.0.0-beta.2","v2.0.0-beta.1","v1.9.9-4","v1.9.9-3","v1.9.9-2","v1.9.9","v1.9.9-1","v1.8.4-patch","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0-patch","v1.7.0","v1.6.8","v1.6.7","v1.6.6","v1.6.5","v1.6.3","v1.6.2","v1.6.1","v1.6.0-fix","v1.6.0","v1.5.2","v1.5.1","v1.5.0","v1.5.0-beta9","v1.5.0-beta8","v1.5.0-beta7","v1.5.0-beta6","v1.5.0-beta5","v1.5.0-beta4-fix","v1.5.0-beta4","v1.5.0-beta3","v1.5.0-beta2","v1.5.0-beta1","v1.4.2","v1.4.1","v1.4.0","v1.4.0-rc1","v1.3.3-rc1","v1.3.2","v1.3.1-fix","v1.3.1","v1.3.0","v1.3.0-rc1","v1.2.2","v1.2.1","v1.2.0-rc.3","v1.2.0","v1.2.0-rc.2","v1.2.0-rc.1","v1.2.0-alpha.4","v1.2.0-alpha.3","v1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27944.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27944.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27944"}],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-306","CWE-311"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27944.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}