curl: 33: CONNECT_ONLY raw I/O selects wrong connection after CURLOPT_SHARE detach (incomplete fix for CVE-2020-8231)

Summary After a completed CURLOPTCONNECTONLY transfer, detaching the shared connection pool via curleasysetopteasy, CURLOPTSHARE, NULL causes curleasysend / curleasyrecv to silently operate on an unrelated connection from a different pool. Data intended for server B is sent to server A, and A's...

Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool

Summary There is a critical vulnerability in Traefik's default HTTP reverse proxy that leads to unauthenticated cross-user response poisoning. When a client opens an HTTP/2 or HTTP/3 CONNECT request, Traefik forwards it — body included — to an HTTP/1.1 upstream over a shared net/http.Transport. I...