Critical severity · published Mar 30, 2026
CVE-2026-33026
nginx-ui Backup Restore Allows Tampering with Encrypted Backups
9.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NG
nginx-ui · 0xJacky
< 2.3.4 · source: vendor
NU
Nginx UI · Nginxui
before 2.3.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33026
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33026
Product
https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4
Exploit
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-fhh2-gg7w-gwpq
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