CVE-2025-59464 | THREATINT

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.

PUBLISHED Reserved 2025-09-16 | Published 2026-01-20 | Updated 2026-01-21 | Assigner hackerone

MEDIUM: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Product status

Default status

unaffected

24.12.0 (semver) before 24.12.0

affected

References

nodejs.org/.../vulnerability/december-2025-security-releases

cve.org (CVE-2025-59464)

nvd.nist.gov (CVE-2025-59464)

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