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.
History

Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Nginxui
Nginxui nginx Ui
Uozi
Uozi cosy
CPEs cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*
cpe:2.3:a:uozi:cosy:*:*:*:*:*:go:*:*
Vendors & Products Nginxui
Nginxui nginx Ui
Uozi
Uozi cosy
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared 0xjacky
0xjacky nginx-ui
Vendors & Products 0xjacky
0xjacky nginx-ui

Tue, 31 Mar 2026 03:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 30 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse
Weaknesses CWE-362
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-30T17:59:19.393Z

Updated: 2026-03-30T20:15:26.098Z

Reserved: 2026-03-17T17:22:14.669Z

Link: CVE-2026-33028

cve-icon Vulnrichment

Updated: 2026-03-30T20:15:20.787Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-30T18:16:18.947

Modified: 2026-04-01T18:45:46.340

Link: CVE-2026-33028

cve-icon Redhat

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