CVE-2026-56811 | phoenixframework phoenix prior 1.5.15/1.6.17/1.7.24/1.8.9 Socket lib/phoenix/socket.ex handle_in/4 allocation of resources

A vulnerability was found in phoenixframework phoenix. It has been declared as problematic. This affects the function handle_in/4 of the file lib/phoenix/socket.ex of the component Socket Module. Executing a manipulation can lead to allocation of resources.

This vulnerability appears as CVE-2026-56811. The attack may be performed from remote. There is no available exploit.