cvedb.io
CVE-2026-27944
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-03-05T19:16:05.840 · Last modified 2026-06-17T10:27:57.110

Summary

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 products

nginxui — nginx_ui

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.