{"cve":"CVE-2026-42222","nvd":{"published":"2026-05-04T21:16:32.173","modified":"2026-10-26T19:10:00.163","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-284","CWE-306"],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq","https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq"],"products":["nginxui:nginx_ui"],"source":"nvd","synced_at":"2026-10-26T19:31:02.781428341+00:00"},"epss":{"cve":"CVE-2026-42222","score":0.00339,"percentile":0.27159,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-mxqh-q9h6-v8pq","url":"https://osv.dev/vulnerability/GHSA-mxqh-q9h6-v8pq","summary":"Nginx-UI: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover","modified":"2026-06-25T23:11:45.915464488Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/nginx-ui","purl":"pkg:golang/github.com/0xJacky/nginx-ui","ranges":["2.3.5"],"fixed":[]}]},{"id":"GO-2026-5521","url":"https://osv.dev/vulnerability/GO-2026-5521","summary":"Nginx-UI: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover in github.com/0xJacky/nginx-ui","modified":"2026-06-25T23:01:20.538901607Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/nginx-ui","purl":"pkg:golang/github.com/0xJacky/nginx-ui","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}