CVE-2026-42223: Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, the GetSettings API handler (api/settings/settings.go:24-65) serializes all…

PriorityP341medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.29%

21.2th percentile

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, the GetSettings API handler (api/settings/settings.go:24-65) serializes all settings structs to JSON and returns them to authenticated users. Many sensitive fields are tagged with protected:"true" - however, this tag is only enforced during writes (via ProtectedFill in SaveSettings) and is completely ignored during reads. This exposes 40+ protected fields including JwtSecret (enabling auth token forgery), NodeSecret (enabling cluster node impersonation), OIDC ClientSecret (enabling OAuth account takeover), and the IP whitelist configuration. This issue has been patched in version 2.3.8.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
0xjacky	nginx-ui	< 2.3.8	2.3.8
github.com	0xjacky_nginx-ui	>= 0 < 2.3.8	2.3.8
nginxui	nginx_ui	< 2.3.8	2.3.8

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