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.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 6.5 | Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Product | Vendor | Version |
|---|---|---|
| node | nodejs | 15.2(4)M6a |