{"id":"CVE-2026-75021","title":"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","summary":"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 debug…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-1327"],"vendor":"fastify-cli","product":"fastify-cli","affected":["fastify-cli >= 1.5.0 < 8.0.1"],"published":"2026-09-08","updated":"2026-09-08","sourceUpdated":"2026-09-08T19:07:52.113","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75021","references":[{"url":"https://cna.openjsf.org/security-advisories.html","label":"ce714d77-add3-4f53-aff5-83d477b104bb"},{"url":"https://github.com/fastify/fastify-cli/security/advisories/GHSA-88v4-3ph7-r88m","label":"ce714d77-add3-4f53-aff5-83d477b104bb"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-08T14:21:00.762047Z"},"ingestedAt":"2026-09-08T15:33:26.984Z","epss":0.00705,"epssPercentile":0.51354,"slug":"CVE-2026-75021","body":"## Overview\n\nfastify-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}