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.
Published: 2026-09-08
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 08 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Fastify-cli
Fastify-cli fastify-cli
Vendors & Products Fastify-cli
Fastify-cli fastify-cli

Tue, 08 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 08 Sep 2026 13:00:00 +0000

Type Values Removed Values Added
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.
Title fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address
Weaknesses CWE-1327
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Fastify-cli Fastify-cli
cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published:

Updated: 2026-09-08T14:21:11.520Z

Reserved: 2026-08-17T13:48:54.386Z

Link: CVE-2026-75021

cve-icon Vulnrichment

Updated: 2026-09-08T14:21:04.778Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-08T13:17:24.010

Modified: 2026-09-08T19:07:52.113

Link: CVE-2026-75021

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-08T20:35:00Z

Weaknesses
  • CWE-1327

    Binding to an Unrestricted IP Address