{"id":"CVE-2026-75021","aliases":["GHSA-88v4-3ph7-r88m"],"url":"https://o3.security/vulnerability/CVE-2026-75021","summary":"fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address","details":"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":"2026-09-08T12:50:23.633Z","modified":"2026-09-09T03:48:15.156055534Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://cna.openjsf.org/security-advisories.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75021.json"},{"type":"ADVISORY","url":"https://github.com/fastify/fastify-cli/security/advisories/GHSA-88v4-3ph7-r88m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75021"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T03:48:15.156055534Z"}}