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…

CVSS 4.0 · [email protected] · Secondary 7.1 HIGHCVSS 3.1 · [email protected] · Primary 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 25 Oct 2026 08:17:18 UTC. Read the latest advisory.

nvd · CVE-2026-33028

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

nvd · CVE-2026-33028

Published

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, con…

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-362

Original publisher date fields

published: 2026-03-30T18:16:18.947

lastModified: 2026-06-17T10:36:48.550

2 source CPE criteria · context only

cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*
cpe:2.3:a:uozi:cosy:*:*:*:*:*:go:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 30 Mar 2026 18:16:18 UTC
Source modified: 17 Jun 2026 10:36:48 UTC
Saved here: 25 Oct 2026 08:17:18 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 7.1 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/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

CVSS 3.1 · [email protected] · Primary · 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H