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CVE-2026-42223

nginx-ui: Settings API Exposes Protected Secrets

Published: May 4, 2026Updated: May 6, 2026 Sources: CVE List NVD BDUCWE-200
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 79.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200

Affected Products

nginx-ui0xJacky
Mixed
Cloud & SaaS / saas-application
nginx uinginxui
On-prem
Networking Infrastructure / network-management
Nginx UIСообщество свободного программного обеспечения
On-prem
Web & CMS Plugins
0xjackyindividual-devCloud & SaaSaka nginx-ui
nginxuicommercialNetworking Infrastructureaka nginx ui, nginxui
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-q4w7-56hr-83rm
github.com
https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.8
github.com
https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.8
github.com

Timeline

Published
May 4, 2026
Last Updated
May 6, 2026

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