high8.1
CVE-2026-42222
Nginx-UI: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/0xJacky/nginx-ui | = 2.3.5 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nginxui | Nginx Ui | Version 2.3.5 |