CVE-2026-123872: fallo de gravedad alta en nodejs node
Node.js is vulnerable to a client certificate authentication bypass via TLS 1.2 renegotiation servername change
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
18Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.1
A client certificate authentication bypass in Node.js TLS lets a client change the servername during TLS 1.2 renegotiation to reach endpoints it was not authorized for. On a server that applies different client-certificate policies per hostname, for example stricter admin-only client-cert auth on one host and ordinary client-cert auth on another, a client that authenticates for a permitted host can renegotiate the TLS 1.2 connection under a different servername and carry its existing authentication to the protected host, bypassing the stricter policy. This vulnerability affects Node.js 26.x, 24.x, and 22.x.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Productos afectados
nodejs · nodeCVEs relacionadas — nodejs node
En el mismo producto, de las más peligrosas a las menos.