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    CVE-2026-42238

    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.

    Published:May 4, 2026
    Last Modified:May 6, 2026
    EPS:May 4, 2026
    EPSS Score:0.0023
    CVSS Score:9.8

    Affected Products

    Vendor
    0xjacky
    Product
    Nginx-ui
    Vendor
    Nginxui
    Product
    Nginx Ui

    Exploits

    https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-4pvg-prr3-9cxrhttps://github.com/0xJacky/nginx-ui/security/advisories/GHSA-4pvg-prr3-9cxr

    Related CVEs

    CVE-2026-44015 (CVSS 8.5) — Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can per…
    CVE-2026-42223 (CVSS 6.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, the GetSettings API handler…
    CVE-2026-42222 (CVSS 8.1) — Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap take…
    CVE-2026-42221 (CVSS 8.1) — Nginx UI is a web user interface for the Nginx web server. From version 2.0.0 to before version 2.3.8, an unau…
    CVE-2026-42220 (CVSS 6.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can c…
    CVE-2026-34403 (CVSS 5.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.5, all WebSocket endpoints in …
    CVE-2026-33031 (CVSS 8.6) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, a user who was disabled by …
    CVE-2026-33026 (CVSS 9.4) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui backup restore…
    CVE-2026-33027 (CVSS 6.9) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration …
    CVE-2026-33028 (CVSS 7.1) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui application is…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High