CVE-2025-59464

A memory leak in Node.js’s OpenSSL integration occurs when converting `X.509` certificate fields to UTF-8 without freeing the allocated buffer. When applications call `socket.getPeerCertificate(true)`, each certificate field leaks memory, allowing remote clients to trigger steady memory growth through repeated TLS connections. Over time this can lead to resource exhaustion and denial of service.

Score
CVSS 3.1 7.5 High
Status
Analyzed - support@hackerone.com
Published
2026-01-20
Last modified
2026-01-21
Weaknesses
CWE-400

Affected products

References