{"id":"CVE-2026-61628","revision":"06afe32fb5f04c52b644177fbbcaf54c","records":[{"revision":"06afe32fb5f04c52b644177fbbcaf54c","observedAt":"2026-10-25T14:19:22.811+00:00","statement":{"source":"nvd","id":"CVE-2026-61628","aliases":[],"title":"nginx ignition is a user interface for the nginx web server. Prior to version 2.41.1, `POST /api/users/onboarding/finish` is registered as anonymous (unauthenticated) and creates a user with full ReadWrite admin permissions. Because the han…","description":"nginx ignition is a user interface for the nginx web server. Prior to version 2.41.1, `POST /api/users/onboarding/finish` is registered as anonymous (unauthenticated) and creates a user with full ReadWrite admin permissions. Because the handler uses a check-then-act (TOCTOU) pattern between the \"onboarding already completed?\" check and the user-creation write, with no atomic guard, a remote unauthenticated attacker who can reach an instance in its pre-onboarding state can create an administrator account for themselves — and concurrent requests can create multiple admin accounts in a single race. Version 2.41.1 patches the issue.","state":0,"publishedAt":"2026-09-21T15:17:30.29+00:00","modifiedAt":"2026-09-23T18:25:00.707+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://github.com/lucasdillmann/nginx-ignition/commit/0586b4e55ab780676d3553a2592979dfa2fb0183","https://github.com/lucasdillmann/nginx-ignition/security/advisories/GHSA-pxcx-fv34-x9p5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61628","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-362"],"productCriteria":[],"sourceDates":{"published":"2026-09-21T15:17:30.290","lastModified":"2026-09-23T18:25:00.707"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-61628","identifiers":["CVE-2026-61628"]},"retained":false,"historicalAffected":[]}],"coverage":[]}