A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 4.1 | Medium | CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N |