CVE-2025-59464

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

Vendor	Product	Versions
nodejs	node	>= 24.12.0, < 24.12.0

References

https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesRelease Notes, Vendor Advisory

Timeline

Published: Jan 20, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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