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
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releases