Memory leak in Node.js - CVE-2025-59464
Published: April 17, 2026
Vulnerability identifier: #VU126390
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-59464
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Node.js Foundation
Affected software:
Node.js
Node.js
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a memory leak in OpenSSL integration when converting X.509 certificate fields to UTF-8 during processing of TLS client certificates. A remote attacker can establish repeated TLS connections to cause a denial of service.
The issue is triggered when applications call socket.getPeerCertificate(true).
How to mitigate CVE-2025-59464
Install security update from vendor's website.