🛡️ CVE-2026-42238
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-94 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, nginx-ui exposes a backup restore endpoint (POST /api/restore) that is completely unauthenticated during the first 10 minutes after process startup on any fresh installation. An unauthenticated remote attacker can upload a crafted backup archive that overwrites the application's configuration file (app.ini) and SQLite database. Because the attacker controls the restored app.ini, they can inject an arbitrary OS command into the TestConfigCmd setting. After the application automatically restarts to apply the restored config, a single follow-up request triggers that command as the user running nginx-ui — typically root in Docker deployments. This issue has been patched in version 2.3.8.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-94
Public Exploit ✅ No
Source NVD
Published 2026-05-06
Updated 2026-06-02
Modified 2026-05-06
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/0xjacky/nginx-ui — —
nginx-ui — 2.3.8

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