CVE-2026-33026

nginx-ui Backup Restore Allows Tampering with Encrypted Backups

CRITICAL 9.4

At a glance

Source: NVD
EPSS: EPSS 0.33 % · percentile 27 (2026-10-28)
State: PUBLISHED
Published: 2026-03-30 19:26 UTC
Updated: 2026-03-31 14:17 UTC
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.

Weaknesses (CWE)

CWE-312 — Cleartext Storage of Sensitive Information
CWE-347 — Improper Verification of Cryptographic Signature
CWE-354 — Improper Validation of Integrity Check Value

References

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)

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

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