CVE-2026-42222CRITICAL 9.8EPSS p25.6%

CVE-2026-42222CVE-2026-42222

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.34% probability of exploitation · percentile 25.6% · 2026-06-19T12:03:05Z
Published2026-05-04
Last modified2026-05-06

Underlying weaknesses· 2

CWE-284CWE-306

References

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

2

TypeTargetConfidenceTier
WeaknessImproper Access Controlcwe-2840%live
WeaknessMissing Authentication for Critical Functioncwe-3060%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.