What is CVE-2026-33026?

CVE-2026-33026 is a critical-severity vulnerability in 0xjacky Nginx-ui, classified under Cleartext Storage of Sensitive Information. CVSS score: 9.1/10. Published 2026-03-30.

How severe is CVE-2026-33026?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in 0xjacky Nginx-ui

CVE-2026-33026

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…

EPSS: 0.003 (25.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

0xjacky Nginx-ui — versions < 2.3.4
Nginxui Nginx_ui

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-33026?: CVE-2026-33026 is a critical-severity vulnerability in 0xjacky Nginx-ui, classified under Cleartext Storage of Sensitive Information. CVSS score: 9.1/10. Published 2026-03-30.
How severe is CVE-2026-33026?: Critical severity. CVSS v3 base score is 9.1 out of 10.