Summary
generated automatically from NVD dataNginx UI, a web interface for Nginx, has an unauthenticated POST /api/restore backup endpoint that is open during the first 10 minutes after startup on fresh installations. A remote attacker can upload a crafted archive that overwrites app.ini and the SQLite database, then inject an OS command into TestConfigCmd that runs as the nginx-ui user (typically root in Docker) after the automatic restart. The flaw is rated CRITICAL with a CVSS 3.1 score of 9.8 and is patched in version 2.3.8.
NVD 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.
EPSS · FIRST.org
0.83%probability of exploitation in the next 30 days
Higher than 56% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-18, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 4 mai 2026
- Updated
- 17 juin 2026
- Status
- Analyzed
- Source
- security-advisories@github.com
Affected products
Weaknesses (CWE)
References (3)
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-4pvg-prr3-9cxrExploitVendor Advisory
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-4pvg-prr3-9cxrExploitVendor Advisory
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