Improper Verification of Source of a Communication Channel

Overview Affected versions of this package are vulnerable to Improper Verification of Source of a Communication Channel due to improper validation in the validateToken function. An attacker can cause the server to treat unvalidated client addresses as validated by supplying any non-empty token...

PT-2026-47566

NoQuicTokenHandler is the tokenHandler used when the application does not set one. Its writeToken returns false server will not send Retry — acceptable, but validateToken unconditionally return 0. In QuicheQuicServerCodec.handlePacket, a non-negative return from validateToken is interpreted as...