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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 21 Jan 2026 21:15:00 +0900

Type Values Removed Values Added
Title nodejs: Nodejs memory leak
Weaknesses CWE-770
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Wed, 21 Jan 2026 20:30:00 +0900

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs

Wed, 21 Jan 2026 05:45:00 +0900

Type Values Removed Values Added
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.
References
Metrics cvssV3_0

{'score': 6.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-01-20T20:41:55.599Z

Reserved: 2025-09-16T15:00:07.875Z

Link: CVE-2025-59464

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-01-20T21:16:03.900

Modified: 2026-01-20T21:16:03.900

Link: CVE-2025-59464

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-01-20T20:41:55Z

Links: CVE-2025-59464 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-01-21T20:18:42Z

Weaknesses