What’s Vulnerable › Vulnerabilities

CVE-2026-42220: nginx-ui: Authenticated settings disclosure exposes node.secret and enables trusted-node authentication abuse, backup exfiltration, and restore-based nginx-ui state rollback

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-04 · updated 2026-10-26
• Weakness: CWE-200

Description

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can call GET /api/settings and retrieve sensitive configuration values, including node.secret. The same node.secret is accepted by AuthRequired() through the X-Node-Secret header (or node_secret query parameter), causing the request to be treated as authenticated via the trusted-node path and associated with the init user. This issue has been patched in version 2.3.8.

Affected products

• 0xJacky nginx-ui: before 2.3.8 — fixed in 2.3.8

How to fix

Upgrade to a fixed version: 0xJacky nginx-ui 2.3.8. Check the vendor advisory for mitigations.

References

• https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.8
• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-7jrr-xw9c-mj39
• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-7jrr-xw9c-mj39

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