CVE-2026-33027
published 2026-03-30CVE-2026-33027: Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal…
PriorityP338medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.40%
31.6th percentile
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| 0xjacky | nginx-ui | < 2.3.4 | 2.3.4 |
| github.com | 0xjacky_nginx-ui | 0 – 1.99 | — |
| nginxui | nginx_ui | < 2.3.4 | 2.3.4 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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
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OSV
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation in github.com/0xJacky/Nginx-UI
osv·2026-04-02
CVE-2026-33027 Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation in github.com/0xJacky/Nginx-UI
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation in github.com/0xJacky/Nginx-UI
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation in github.com/0xJacky/Nginx-UI
OSV
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
osv·2026-03-30
CVE-2026-33027 [MEDIUM] Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
## Summary
The nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire `/etc/nginx` directory, resulting in a partial Denial of Service.
## Details
The file deletion logic fails to correctly validate and normalize paths containing URL-encoded traversal sequences such as `..%252F`.
When such input is processed, the internal path resolution logic attempts to clamp the path into the allowed configuration directory. Instead of rejecting the t
GHSA
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
ghsa·2026-03-30
CVE-2026-33027 [MEDIUM] CWE-22 Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
## Summary
The nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire `/etc/nginx` directory, resulting in a partial Denial of Service.
## Details
The file deletion logic fails to correctly validate and normalize paths containing URL-encoded traversal sequences such as `..%252F`.
When such input is processed, the internal path resolution logic attempts to clamp the path into the allowed configuration directory. Instead of rejecting the t
No detection rules found.
No public exploits indexed.
2026-03-30
Published