CVE-2026-42220 — Nginx UI is a web user interface for the Nginx web server.

title: CVE-2026-42220 - Nginx UI Sensitive Configuration Exposure
id: scw-2026-05-04-ai-1
status: experimental
level: high
description: |
  Detects an authenticated user accessing the /api/settings endpoint via a GET request in Nginx UI. This specific endpoint, prior to version 2.3.8, is vulnerable to exposing sensitive configuration values, including node.secret, which can be leveraged for further exploitation.
author: SCW Feed Engine (AI-generated)
date: 2026-05-04
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-42220/
tags:
  - attack.credential_access
  - attack.t1078.004
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/api/settings'
      cs-method|exact:
          - 'GET'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse