# CVE-2026-21636

> A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution. * The issue affects users of the Node.js permission model on version v25. In the moment of th

- **CVSS:** 10 (CRITICAL)
- **EPSS:** 0.0%
- **CWE:** CWE-284

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-21636
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