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

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

0xJacky · nginx-ui

CVSS v3.1 GITHUB

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

EPSS

0.40% chance of exploitation in the next 30 days, 32nd percentile

Published

2026-05-04

Updated

2026-05-06

Proof-of-concept exploits (1)

• advisories/GHSA-7jrr-xw9c-mj39

Security advisories

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

References

• CVE Record
• NVD entry