CVE-2026-107810

HIGH 8.1

Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, internal/backup/restore.go extracts inner archives before applying the restore_nginx and restore_nginx_ui flags and permits symlinks targeting the live Nginx configuration path. An authenticated user who can create and restore backups can craft a valid backup that places a symlink in the staging tree and then writes a regular file through that link, even when both restore flags are false. This can persistently inject configuration or cause denial of service when the modified files are later consumed. This issue is fixed in version 2.5.0.

CWE	CWE-59 CWE-61
Vendor	0xjacky
Product	nginx-ui
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Affected Versions

0xJacky / nginx-ui

>= 2.0.0, < 2.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-p8v3-89rh-jxc7 github.com: https://github.com/0xJacky/nginx-ui/commit/a467ed652591fc0cd1b466a1ec751b493faef9f7 github.com: https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0