CVE-2026-75021
fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address
- State
- Published
- Severity
- 8.1 High
- Published
- Sep 8, 2026
- Updated
- Sep 8, 2026
- Reserved
- Aug 17, 2026
Description
fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and because the Inspector protocol allows arbitrary code evaluation, a remote party that reaches it can achieve remote code execution on the developer's machine. This affects fastify-cli from 1.5.0 up to 8.0.1. Users should upgrade to fastify-cli 8.0.1, which honors the configured Inspector bind address.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | openjs |
Weaknesses
- CWE-1327 Binding to an Unrestricted IP Address
Affected Products
| Product | Versions |
|---|---|
fastify-clifastify-cli |
|
References
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