Link following in nginx-ui - #VU142589
Published: August 14, 2026
Vulnerability identifier: #VU142589
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper handling of symbolic links in the backup restore process when processing an attacker-supplied backup archive with Nginx restore enabled. A remote attacker can upload a specially crafted backup archive containing symlink entries to cause a denial of service.
Exploitation requires the restore operation to accept a correctly formatted encrypted backup archive and to run with restore_nginx=true.
Affected software
nginx-ui
Remediation
Install security update from vendor's website.
nginx-ui - update to 2.5.0