Vulnerability · Published Mar 30, 2026 · Assigned by GitHub_M

CVE-2026-33030Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys

High 8.8

In plain English

A high-severity OS command injection in nginx-ui from 0xJacky. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 78.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/0xJacky/nginx-ui	no fix listed	GHSA-5hf2-vhj6-gj9m
Go	github.com/0xJacky/nginx-ui	no fix listed	GO-2026-4901

Affected products (as reported)

Vendor	Product	Versions
0xJacky	nginx-ui	<= 2.3.3

Weakness: CWE-78, CWE-639 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-5hf2-vhj6-gj9m x_refsource_CONFIRM