CVE-2026-33026: nginx-ui Backup Restore Allows Tampering with Encrypted Backups

Severity: Critical

CVSS Score: 9.1

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui backup restore mechanism allows attackers to tamper with encrypted backup archives and inject malicious configuration during restoration. This issue has been patched in version 2.3.4.