Path traversal in nginx-ui - CVE-2026-33027
Published: April 23, 2026
Vulnerability identifier: #VU126938
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33027
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to path traversal in the configuration deletion handler when processing specially crafted URL-encoded traversal paths. A remote privileged user can send a specially crafted deletion request to cause a denial of service.
The issue can cause recursive deletion of the entire Nginx configuration directory because the resolved path is passed to os.RemoveAll.
Affected software
nginx-ui
How to mitigate CVE-2026-33027
Install security update from vendor's website.
nginx-ui - update to 2.3.4