CVE-2026-106069 Node.js - Authentication Bypass

Node.js 22.x, 24.x, and 26.x contain a broken authentication caused by inconsistent TLS hostname verification of non-canonical IPv4 literals with leading zeros, letting attackers authenticate servers with mismatched certificates, exploit requires connection to such IP addresses.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Man In The Middle
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-295

Vendor fix

Update to the latest Node.js version beyond 26.x, 24.x, and 22.x.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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