CVE-2026-102556 [HIGH] – A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocket

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.