CVE-2026-84316 (GCVE-0-2026-84316)

Vulnerability from cvelistv5 – Published: 2026-10-12 21:05 – Updated: 2026-10-12 21:06
VLAI
Title
Nginx UI: nginx config directive denylist (ValidateConfigFile) is bypassable via same-line ";" separation → authenticated directive injection (RCE on the official image)
Summary
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, config.ValidateConfigDirectives splits configuration by newline and checks only the first directive token on each line even though Nginx permits multiple semicolon-separated directives on one line. An authenticated caller can place a benign directive first and a restricted load_module, js_import, perl, or user root directive later on the same line, or can use an unrestricted include directive to load restricted content. These mechanisms bypass validation on REST, nginx_config_modify, site, and stream write paths; when an executable module is available, the injected configuration can execute code in the Nginx worker context. This issue is fixed in version 2.4.1.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-20 - Improper Input Validation
  • CWE-184 - Incomplete List of Disallowed Inputs
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7566 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
0xJacky nginx-ui Affected: < 2.4.1
guessed Create a notification for this product.
Show details on NVD website
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      },
      "title": "Nginx UI: nginx config directive denylist (ValidateConfigFile) is bypassable via same-line \";\" separation \u2192 authenticated directive injection (RCE on the official image)"
    }
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  "cveMetadata": {
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}



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