CVE-2026-42220

Name: CVE-2026-42220
Creator: NVD / NIST
Published: 2026-05-04T21:16:31.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2026-42220 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.30%

21.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nginxui	Nginx Ui	< 2.3.8

References

https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.8Release Notes
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-7jrr-xw9c-mj39Exploit, Vendor Advisory
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-7jrr-xw9c-mj39Exploit, Vendor Advisory

Timeline

Published: May 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42220?

How severe is CVE-2026-42220?

CVE-2026-42220 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42220?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42220?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST