CVE-2026-21711
Published: March 29, 2026Last modified: April 1, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | LOW |
| Availability impact | LOW |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | nodejs | Not affected (18.16.0-r0) |
| 25 LTS | nodejs | Not affected (22.16.0-r1) | |
| Stream | nodejs | Not affected (18.16.1-r0) | |
| Hardened Containers | 23 LTS | nodejs | Not affected (18.16.0-r0) |
| 25 LTS | nodejs | Not affected (22.16.0-r1) | |
| Stream | nodejs | Not affected (18.16.1-r0) |