PT-2026-36922 · Nginx-Ui · Nginx-Ui

Kakeru-Ishii · Published 2026-04-27 · Updated 2026-05-06 · CVE-2026-42222

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

Affected Products

Nginx-Ui

References · 11

• 🔥 https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq · Exploit
• https://bdu.fstec.ru/vul/2026-06341 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42222 · Security Note
• https://osv.dev/vulnerability/GHSA-mxqh-q9h6-v8pq · Vendor Advisory
• https://github.com/0xJacky/nginx-ui · Note
• https://twitter.com/VulmonFeeds/status/2051472772417614291 · Twitter Post
• https://t.me/cveNotify/162090 · Telegram Post
• https://twitter.com/CVEnew/status/2051403815404839244 · Twitter Post
• https://app.opencve.io/cve/CVE-2026-42222 · Note
• https://twitter.com/infoflowcloud/status/2051405525783285909 · Twitter Post
• https://t.me/CVEtracker/52678 · Telegram Post