Vulnerability in Nodejs Node
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…
EPSS: 0.007 (47.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Nodejs Node — versions 25.2.1
- Nodejs Node.js
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21636?
- CVE-2026-21636 is a critical-severity vulnerability in Nodejs Node, classified under Improper Access Control. CVSS score: 10.0/10. Published 2026-01-20.
- How severe is CVE-2026-21636?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2026-21636 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.