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.
- Score
- CVSS 3.0 5.3 Medium
- Status
- Analyzed - support@hackerone.com
- Published
- 2026-03-30
- Last modified
- 2026-04-01
- Weaknesses
- CWE-284
Affected products
References
- https://nodejs.org/en/blog/vulnerability/march-2026-security-releases
