CVE-2026-42238

UNKNOWN 0.0

Unauthenticated Remote Code Execution via Backup Restore in nginx-ui

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-94
Vendor	0xjacky
Product	nginx-ui
Published	May 4, 2026

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Affected Versions

0xJacky / nginx-ui

< 2.3.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-4pvg-prr3-9cxr github.com: https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.8