PT-2026-36922 · Nginx-Ui · Nginx-Ui

Kakeru-Ishii · CVE-2026-42222 · Published 2026-04-27 · Updated 2026-07-30

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Nginx UI version 2.3.5

Description Nginx UI, a web user interface for the Nginx web server, contains a flaw allowing an unauthenticated bootstrap takeover. This occurs during the initial installation window via the 'POST /api/install' endpoint.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authentication

Improper Access Control

Weakness Enumeration

CWE-306

CWE-284

Related Identifiers

BDU:2026-06341

CVE-2026-42222

GHSA-MXQH-Q9H6-V8PQ

GO-2026-5521

OPENSUSE-SU-2026:21483-1

Affected Products

Nginx-Ui

References · 1749

• 🔥 https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42222.json · Exploit
• https://osv.dev/vulnerability/GHSA-mxqh-q9h6-v8pq · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-42222 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06341 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42222 · Security Note
• https://osv.dev/vulnerability/GO-2026-5521 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:21483-1 · Vendor Advisory
• https://github.com/0xJacky/nginx-ui · Note
• https://suse.com/security/cve/CVE-2025-65797 · Note
• https://suse.com/security/cve/CVE-2026-44427 · Note
• https://suse.com/security/cve/CVE-2026-27589 · Note
• https://suse.com/security/cve/CVE-2026-7736 · Note
• https://suse.com/security/cve/CVE-2026-27137 · Note
• https://suse.com/security/cve/CVE-2026-25232 · Note