Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nginxui | Nginx Ui | < 2.3.4 |
Related Weaknesses (CWE)
References
- https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4ProductRelease Notes
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357ExploitVendor Advisory
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357ExploitVendor Advisory
FAQ
What is CVE-2026-33027?
CVE-2026-33027 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 suppl...
How severe is CVE-2026-33027?
CVE-2026-33027 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33027?
Check the references section above for vendor advisories and patch information. Affected products include: Nginxui Nginx Ui.