GHSA-3H7Q-RFH9-XM4V Synapse V2 state resolution weakness allows Denial of Service (DoS)

Impact A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in how the auth chain cover index is calculated. This can induce high CPU consumption and accumulate excessive data in the database ...