CVE-2026-121966: traefik: Traefik 2.x before 2.11.60 and 3.x before 3.7.16 sends ForwardAuth subrequests (and, in 3.7, Ingress NGINX auth-url…

Traefik 2.x before 2.11.60 and 3.x before 3.7.16 sends ForwardAuth subrequests and, in 3.7, Ingress NGINX auth-url requests through an auth-server connection pool shared by all clients, exposing connection-bound NTLM or Negotiate authentication. An unauthenticated attacker can reuse another user'...