CVE-2026-21711

A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them.

As a result, code running under `–permission` without `–allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary.

This vulnerability affects Node.js **25.x** processes using the Permission Model where `–allow-net` is intentionally omitted to restrict network access. Note that `–allow-net` is currently an experimental feature.

More information : https://nodejs.org/en/blog/vulnerability/march-2026-security-releases