CVE-2026-33028

HIGH

Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse

Title source: cna
STIX 2.1

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.

References (2)

Scores

CVSS v3 7.5
EPSS 0.0009
EPSS Percentile 25.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-362
Status published
Products (5)
0xJacky/Nginx-UI 0Go
0xJacky/nginx-ui < 2.3.4
nginxui/nginx_ui < 2.3.4
uozi/cosy < 1.30.1
uozi-tech/cosy 0 - 1.30.1Go
Published Mar 30, 2026
Tracked Since Mar 31, 2026