CVE-2026-33026

Name: CVE-2026-33026
Creator: NVD / NIST
Published: 2026-03-30T20:16:22.13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.4/10EPSS 0.33%

Last modified Jun 17, 2026

CVE-2026-33026 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. 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. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS 4.0

9.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.33%

24.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nginxui	Nginx Ui	< 2.3.4

References

https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4Product, Release Notes
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-fhh2-gg7w-gwpqExploit, Mitigation, Vendor Advisory
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-fhh2-gg7w-gwpqExploit, Mitigation, Vendor Advisory

Timeline

Published: Mar 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33026?

How severe is CVE-2026-33026?

CVE-2026-33026 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33026?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33026?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST