CVE-2026-33030

Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys

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.

Affected

0xJacky · nginx-ui

CVSS v3.1 NVD

9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 GITHUB

8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.38% chance of exploitation in the next 30 days, 30th percentile

Published

2026-03-30

Updated

2026-03-31

Proof-of-concept exploits (1)

• advisories/GHSA-5hf2-vhj6-gj9m

Security advisories

• 0xJacky/nginx-ui/security/advisories/GHSA-5hf2-vhj6-gj9m

References

• CVE Record
• NVD entry