CVE-2026-42222 | BDVDB-2026-330366 Detail

0xJackynginx-ui

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-306 Missing Authentication for Critical Function
CWE-284 Improper Access Control

References#

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq

Exploit#

No public exploit known

History#

Version 12026-05-04Record published in the CVE List.
Version 22026-05-06Most recent update recorded in the CVE List.

Published

Published: 2026-05-04
Last modified: 2026-05-06

Vendor information

Vendor: 0xJacky
Product: nginx-ui

All 0xJacky vulnerabilities

Score

8.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 27.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
= 2.3.5
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.1 High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).