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CVE-2026-33028
Nginx UI vulnerability analysis and mitigation

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui application is vulnerable to a Race Condition. Due to the complete absence of synchronization mechanisms (Mutex) and non-atomic file writes, concurrent requests lead to the severe corruption of the primary configuration file (app.ini). This vulnerability results in a persistent Denial of Service (DoS) and introduces a non-deterministic path for Remote Code Execution (RCE) through configuration cross-contamination. This issue has been patched in version 2.3.4.


SourceNVD

Related Nginx UI vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-33030CRITICAL9.9
  • Nginx UINginx UI
  • github.com/0xjacky/nginx-ui
NoNoMar 30, 2026
CVE-2026-33032CRITICAL9.8
  • Nginx UINginx UI
  • cpe:2.3:a:nginxui:nginx_ui
NoNoMar 30, 2026
CVE-2026-33026CRITICAL9.4
  • Nginx UINginx UI
  • github.com/0xjacky/nginx-ui
NoYesMar 30, 2026
CVE-2026-33028HIGH7.1
  • Nginx UINginx UI
  • cpe:2.3:a:nginxui:nginx_ui
NoYesMar 30, 2026
CVE-2026-33029MEDIUM6.9
  • Nginx UINginx UI
  • cpe:2.3:a:nginxui:nginx_ui
NoYesMar 30, 2026

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