Missing Authentication for Critical Function Affecting github.com/0xjacky/nginx-ui package, versions <2.3.8
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOM0XJACKYNGINXUI-16776505
- published20 May 2026
- disclosed6 May 2026
- creditAlias-9th
Introduced: 6 May 2026
CVE-2026-42222 Â (opens in a new tab)How to fix?
Upgrade github.com/0xJacky/Nginx-UI to version 2.3.8 or higher.
Overview
github.com/0xJacky/Nginx-UI is a yet another Nginx Web UI, developed by 0xJacky and Hintay.
Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the POST /api/install endpoint during the initial setup 10 minutes window, which is accessible without authentication. An attacker can gain full administrative control of the application by submitting attacker-controlled bootstrap data, including setting the application's secrets and initial administrator credentials. This is only exploitable if the target instance is still in its first-run state and within the initial setup window.