CVE-2026-33028
Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse
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.
INFO
Published Date :
March 30, 2026, 6:16 p.m.
Last Modified :
April 1, 2026, 6:45 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Nginx UI to version 2.3.4.
- Review and restore configuration file integrity.
- Implement synchronization for file writes.
- Audit for any configuration cross-contamination.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33028.
| URL | Resource |
|---|---|
| https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4 | Product Release Notes |
| https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33028 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33028
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33028 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33028 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 01, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* versions up to (excluding) 2.3.4 *cpe:2.3:a:uozi:cosy:*:*:*:*:*:go:*:* versions up to (excluding) 1.30.1 Added Reference Type GitHub, Inc.: https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4 Types: Exploit, Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Mar. 30, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-362 Added Reference https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4 Added Reference https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4