CVE-2026-33026: Nginxui Nginx UI

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Nginxui Nginx UI: before 2.3.4 (fixed in 2.3.4)

Published 2026-03-30. Last modified 2026-06-17.