HIGHCVE-2026-42222Published Modified CNA GitHub_M
CVE-2026-42222: nginx-ui: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover
Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap takeover exists in nginx-ui during the initial installation window exposed by POST /api/install. At time of publication no public patches are available.
Metrics
- CVSS v3.1
- 8.1
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- 0xJacky / nginx-ui= 2.3.5
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H