CVE-2026-33027

Nginx UI: Improper Path Validation Allows Recursive Deletion of the Nginx Configuration Directory

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.

Scores

Weaknesses (CWE)

• CWE-22
• CWE-73

Advisories

• GHSA-m8p8-53vf-8357 — Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation
• GO-2026-4907 — Nginx Configuration Directory Vulnerable to Recursive Deletion via Improper Path Validation in github.com/0xJacky/Nginx-UI

European references

• ENISA EUVD · EUVD-2026-17151
• GCVE · GCVE-0-2026-33027

Affected configurations (NVD CPE)

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

Affected products

References

• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357
• https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4

Sources