CVE-2026-33030 Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys
Authenticated users can access, modify, and delete other users' resources due to missing ownership checks in Nginx UI.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33030?
CVE-2026-33030 is a high-severity missing authorization vulnerability in 0xJacky nginx-ui, published on 30 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-33030?
3 open source packages ship an affected version, including github.com/0xJacky/nginx-ui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/0xJacky/nginx-ui Go | All versions | None |
github.com/0xJacky/nginx-ui Go | All versions to 1.99 | None |
github.com/0xJacky/nginx-ui Go | All versions to 1.99 | None |
Products include Nginxui Nginx Ui.
How do I fix CVE-2026-33030?
No fix published yet.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-33030 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33030 exists.
Other vulnerabilities in 0xJacky nginx-ui
- CVE-2026-33032 Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover
- CVE-2026-27944 Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
- CVE-2024-23827 Nginx-UI arbitrary file write through the Import Certificate feature
- CVE-2026-107806 Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite
- CVE-2026-33026 nginx-ui Backup Restore Allows Tampering with Encrypted Backups
Sources
Also known as GHSA-5hf2-vhj6-gj9m, GO-2026-4901.