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.
Metrics
Affected Vendors & Products
References
History
Wed, 06 May 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nginxui
Nginxui nginx Ui |
|
| CPEs | cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Nginxui
Nginxui nginx Ui |
|
| Metrics |
cvssV3_1
|
Tue, 05 May 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 04 May 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
0xjacky
0xjacky nginx-ui |
|
| Vendors & Products |
0xjacky
0xjacky nginx-ui |
Mon, 04 May 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Unauthenticated Remote Code Execution via Backup Restore in nginx-ui | |
| Weaknesses | CWE-94 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-04T20:13:22.196Z
Updated: 2026-05-05T15:50:36.447Z
Reserved: 2026-04-25T05:37:12.118Z
Link: CVE-2026-42238
Updated: 2026-05-05T15:48:19.149Z
Status : Analyzed
Published: 2026-05-04T21:16:32.707
Modified: 2026-05-06T14:45:44.013
Link: CVE-2026-42238
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