CVE-2026-42220mediumCWE-200CWE-863

CVE-2026-42220: medium-severity vulnerability in 0xJacky nginx-ui

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

Published · Updated

Follow this CVE+ Monitor nginx-ui+ Monitor github.com/0xJacky/Nginx-UI

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
0xJacky · nginx-ui
Related CVEs — 0xJacky nginx-ui

In the same product, most dangerous first.

CVE-2026-33032CRITICALNginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx TakeoverEPSS 35.3%CVE-2024-49368HIGHUnchecked logrotate settings lead to arbitrary command executionEPSS 27.7%CVE-2026-27944CRITICALNginx UI: Unauthenticated Backup Download with Encryption Key DisclosureEPSS 22.8%CVE-2024-22198HIGHAuthenticated (user role) arbitrary command execution by modifying `start_cmd` setting (GHSL-2023-268)EPSS 4.1%CVE-2024-22197HIGHAuthenticated (user role) remote command execution by modifying `nginx` settings (GHSL-2023-269)EPSS 1.5%CVE-2026-42221HIGHnginx-ui: Unauthenticated First-Run Installer Allows Remote Initial Admin ClaimEPSS 1.3%