CVE-2026-33026

nginx-ui Backup Restore Allows Tampering with Encrypted Backups

At a glance

Severity: CRITICAL 9.4
EPSS: EPSS 0.33 % · percentile 27 (2026-10-27)
State: PUBLISHED
Published: 2026-03-30
Updated: 2026-03-31
Assigner: GitHub_M
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 4.0	CRITICAL 9.4	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	GitHub_M
CVSS 4.0	CRITICAL 9.4	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	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

Advisories

GHSA-fhh2-gg7w-gwpq — nginx-ui Backup Restore Allows Tampering with Encrypted Backups
GO-2026-4903 — nginx-ui Backup Restore Allows Tampering with Encrypted Backups in github.com/0xJacky/Nginx-UI

European references

ENISA EUVD · EUVD-2026-17194
GCVE · GCVE-0-2026-33026

Affected configurations (NVD CPE)

cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* < 2.3.4

Affected products

Product	Versions
0xJacky · nginx-ui	affected < 2.3.4

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD