Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-639 and CWE-78.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| 0xJacky | nginx-ui | up to 2.3.3 | — | No fix listed | CNA |
| — | github.com/0xJacky/nginx-ui (Go) | up to 1.99 | — | No fix listed | GHSA-5hf2-vhj6-gj9m |
- nginx-ui Vendor0xJacky Affected up to 2.3.3 Fixed in — No fix listed CNA
- github.com/0xJacky/nginx-ui (Go) Vendor— Affected up to 1.99 Fixed in — No fix listed GHSA-5hf2-vhj6-gj9m
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33030
- 2026-10-03 Alias added: GHSA-5hf2-vhj6-gj9m
References
More 0xJacky Nginx Ui vulnerabilities
- TI-2026-25478 Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover CVSS 3.1CRITICAL 9.8
- TI-2026-25472 nginx-ui Backup Restore Allows Tampering with Encrypted Backups CVSS 4.0CRITICAL 9.4
- TI-2026-22288 Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure CVSS 3.1CRITICAL 9.8
- TI-2024-15821 Nginx-UI arbitrary file write through the Import Certificate feature CVSS 3.1CRITICAL 9.8
- TI-2026-70057 Code injection in Nginx UI backup restore allows code execution CVSS 4.0CRITICAL 9.4
- TI-2026-32056 Nginx UI: Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services CVSS 3.1CRITICAL 9.9
Sources
- CVE-2026-33030 · CVE Program
- CVE-2026-33030 · NVD
- FIRST EPSS
- GHSA-5hf2-vhj6-gj9m · GitHub Advisory Database · CC BY 4.0
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