CVE-2026-84320

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.3, Nginx UI validates an automatic backup's storage_path, but AutoBackup.GetName returns a user-controlled name without rejecting path separators or parent-directory components, and downstream filename formatting embeds that result in the final archive filename. An authenticated user who can create or modify an automatic backup can cause filepath.Join to resolve the generated archive path outside the validated storage directory, allowing backup archives to be written with the Nginx UI process privileges. For encrypted configuration backups, the adjacent encryption key file can also be written outside the validated directory. This issue is fixed in version 2.4.3.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/0xJacky/nginx-ui/commit/f92218e01054491fc1e6684dc6f7facaf8ab41eb
https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.3
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-jrq7-xrjx-pcfw

Configurations

No configuration.

History

12 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 21:17

Updated : 2026-10-13 21:19

NVD link : CVE-2026-84320

Mitre link : CVE-2026-84320

CVE.ORG link : CVE-2026-84320

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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