Information disclosure in 0xJacky nginx-ui
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-863.
Summary
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can call GET /api/settings and retrieve sensitive configuration values, including node.secret. The same node.secret is accepted by AuthRequired() through the X-Node-Secret header (or node_secret query parameter), causing the request to be treated as authenticated via the trusted-node path and associated with the init user. This issue has been patched in version 2.3.8.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
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 | before 2.3.8 | 2.3.8 | Patch available | CNA |
| — | github.com/0xJacky/Nginx-UI (Go) | up to 1.9.9 | — | No fix listed | GHSA-7jrr-xw9c-mj39 |
- nginx-ui Vendor0xJacky Affected before 2.3.8 Fixed in 2.3.8 Patch available CNA
- github.com/0xJacky/Nginx-UI (Go) Vendor— Affected up to 1.9.9 Fixed in — No fix listed GHSA-7jrr-xw9c-mj39
Remediation
- Fix · CNA nginx-ui (0xJacky) Fixed in 2.3.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42220
- 2026-10-03 Alias added: GHSA-7jrr-xw9c-mj39
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-2026-42220 · CVE Program
- CVE-2026-42220 · NVD
- FIRST EPSS
- GHSA-7jrr-xw9c-mj39 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences