# CVE-2026-42220: Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can call GET…

Source: https://junglewise.ai/threats/cve-2026-42220-nginx-ui-authenticated-settings-disclosure-exposes-node-secret  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-04  
License: CC BY 4.0 with a link back

CVE-2026-42220 · Severity: medium · CVSS 6.5 · Published 2026-05-04

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.

Technologies: [github.com/0xJacky/Nginx-UI (Go)](https://junglewise.ai/threats/technologies/github-com-0xjacky-nginx-ui), [Nginxui Nginx Ui](https://junglewise.ai/threats/technologies/nginxui-nginx-ui). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Nginxui](https://junglewise.ai/threats/vendors/nginxui).

## Quick answers

**Is CVE-2026-42220 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42220 being exploited in the wild.

**How severe is CVE-2026-42220?** Medium severity, with a CVSS score of 6.5, published 4 May 2026.

**Which products and versions are affected?** github.com/0xJacky/Nginx-UI (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=1.9.9.

**Is there a fix for CVE-2026-42220?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-42220?** Check whether you run github.com/0xJacky/Nginx-UI (Go) or Nginxui Nginx Ui at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- github.com/0xJacky/Nginx-UI (Go) SEMVER:introduced=0, SEMVER:introduced=0,last_affected=1.9.9
- Nginxui Nginx Ui

## Identifiers

- CVE-2026-42220
- GHSA-7jrr-xw9c-mj39
- GO-2026-5227

## Related threats

- [Nginx UI Casdoor SSO login CSRF via constant state parameter](https://junglewise.ai/threats/cve-2026-84312-nginx-ui-casdoor-sso-callback-uses-a-constant-state-parameter)
- [Nginx UI OTP secure-session step-up bypass via MCP](https://junglewise.ai/threats/cve-2026-84360-nginx-ui-otp-secure-session-step-up-can-be-bypassed-via-mcp)
- [Nginx UI short token cache bypass after account re-enable](https://junglewise.ai/threats/cve-2026-84321-nginx-ui-standalone-short-tokens-survive-administrative)
- [Nginx UI auto backup path traversal in storage boundary](https://junglewise.ai/threats/cve-2026-84320-nginx-ui-auto-backup-name-allows-path-traversal-outside-validated)
- [Nginx UI MCP configuration directive validation bypass](https://junglewise.ai/threats/cve-2026-84319-nginx-ui-mcp-configuration-tools-bypass-restricted-directive)