CVE-2026-33030
CVE-2026-33030 is a high-severity vulnerability in Nginxui Nginx Ui with a CVSS 3.x base score of 8.8. 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-78.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-17156
- Weakness: CWE-78
- Affected product: Nginxui Nginx Ui
- Published:
- Last modified:
Description
Nginx UI is a web user interface for the Nginx web server. In versions 2.3.3 and prior, Nginx-UI contains an Insecure Direct Object Reference (IDOR) vulnerability that allows any authenticated user to access, modify, and delete resources belonging to other users. The application's base Model struct lacks a user_id field, and all resource endpoints perform queries by ID without verifying user ownership, enabling complete authorization bypass in multi-user environments. At time of publication, there are no publicly available patches.
Frequently asked questions
- What is CVE-2026-33030?
- Nginx UI is a web user interface for the Nginx web server. In versions 2.3.3 and prior, Nginx-UI contains an Insecure Direct Object Reference (IDOR) vulnerability that allows any authenticated user to access, modify, and delete resources belonging to other users. The application's base Model struct lacks a user_id field, and all resource endpoints perform queries by ID without verifying user ownership, enabling complete authorization bypass in multi-user environments. At time of publication, there are no publicly available patches.
- How severe is CVE-2026-33030?
- CVE-2026-33030 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-33030 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-33030?
- CVE-2026-33030 affects Nginxui Nginx Ui. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-33030?
- 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-2026-33030 have an EU (EUVD) identifier?
- Yes. CVE-2026-33030 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17156.
- When was CVE-2026-33030 published?
- CVE-2026-33030 was published on 2026-03-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*
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