Vulnerability · Published May 4, 2026 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity information exposure in nginx-ui from 0xJacky. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 77.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/0xJacky/Nginx-UI	no fix listed	GHSA-7jrr-xw9c-mj39
Go	github.com/0xJacky/Nginx-UI	no fix listed	GO-2026-5227

Affected products (as reported)

Vendor	Product	Versions
0xJacky	nginx-ui	< 2.3.8

Weakness: CWE-200, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

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