CVE-2026-75021fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address
Updated under an hour ago ()
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It affects fastify-cli. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-1327
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- openjs
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fastify-cli fastify-cli fastify_cli:fastify_cli (from the name) | from 1.5.0 before 8.0.1; 8.0.1 not affected | CNA record |
References
- https://github.com/fastify/fastify-cli/security/advisories/GHSA-88v4-3ph7-r88m
- https://cna.openjsf.org/security-advisories.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.