{ "cve": [ "CVE-2026-56850" ], "vulnerable": "22.x || 24.x || 26.x", "patched": "^22.23.2 || ^24.18.1 || ^26.5.1", "ref": "https://nodejs.org/en/blog/vulnerability/july-2026-security-releases", "description": "HTTPS Agent PFX object-array key collision allows mTLS client identity reuse across different per-request certificates", "overview": "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.\n\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.", "affectedEnvironments": [ "all" ], "severity": "medium" }