How severe is CVE-2026-33028?

CVE-2026-33028 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33028?

CVE-2026-33028 primarily affects Nginxui Nginx Ui. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-33028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33028 have an EU (EUVD) identifier?

Yes. CVE-2026-33028 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17152.

When was CVE-2026-33028 published?

CVE-2026-33028 was published on 2026-03-30 and last updated on 2026-06-17.

CVE-2026-33028

CVE-2026-33028 is a high-severity vulnerability in Nginxui Nginx Ui with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 7.1
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17152
Weakness: CWE-362
Affected product: Nginxui Nginx Ui
Published: 2026-03-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-33028?: CVE-2026-33028 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33028?: CVE-2026-33028 primarily affects Nginxui Nginx Ui. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-33028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33028 have an EU (EUVD) identifier?: Yes. CVE-2026-33028 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17152.
When was CVE-2026-33028 published?: CVE-2026-33028 was published on 2026-03-30 and last updated on 2026-06-17.

References

Affected products (2)

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

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