CVE-2026-33028 HIGH

CVE-2026-33028: Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse

Vendor 0Xjacky

Product nginx-ui

Weakness CWE-362

Published March 30, 2026

Last update March 30, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction None

Confidentiality —

Integrity —

CVSS 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

What the vulnerability does

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.

Key dates

Disclosure timeline

March 30, 2026 CVE published

March 30, 2026 Record updated