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Vulnerability record · CVE-2025-59464 · published 20 January 2026

CVE-2025-59464: Nodejs node.js uncontrolled resource consumption vulnerability

Nodejs · Node.Js

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.

7.5 CVSS 3.1 High EPSS 0.27% · top 83.5% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://nodejs.org/en/blog/vulnerability/december-2025-security-releases Release NotesVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-59464), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.