CVE-2026-33028

EUVD-2026-17152

30.03.2026, 18:16

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.

Race Condition

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 25%

Affected Products (NVD)

Vendor	Product	Version
nginxui	nginx_ui	𝑥 < 2.3.4
uozi	cosy	𝑥 < 1.30.1

𝑥

= Vulnerable software versions

Known Exploits!

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4

Common Weakness Enumeration

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References

https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4