Vulnerability in 0xjacky Nginx-Ui
CVE-2026-33028
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001
Affected products
- 0xjacky Nginx-Ui — versions < 2.3.4
- Nginxui nginx Ui
- Uozi Cosy
Weakness classification (CWE)
References
- github.com/0xJacky/nginx-ui/security/advisories/GHSA-m468-xcm6-fxg4 (Exploit, Mitigation, Vendor Advisory)
- github.com/0xJacky/nginx-ui/releases/tag/v2.3.4 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-33028?
- CVE-2026-33028 is a high-severity vulnerability in 0xjacky Nginx-Ui, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2026-03-30.
- How severe is CVE-2026-33028?
- High severity. CVSS v3 base score is 7.5 out of 10.