7.5

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

Analyzed
AliasesGHSA-m468-xcm6-fxg4GO-2026-4906
Published 30-03-2026Last modified 30-03-2026

Vulnerability summary

CVE-2026-33028 is a high (CVSS 7.5) vulnerability in 0xjacky nginx-ui. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 46.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.55%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1205-1

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 30-03-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.59% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Nginx Ui

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

0xjacky1 product
Github.com/0xJacky1 product
  • Nginx-UI≤ 1.99 | All versions (No fix recorded)
Github.com/uozi-tech1 product
  • cosy< 1.30.1
Nginxui1 product
Uozi1 product

5 vendors · 5 products

References

4 links