Denial Of Service (DoS)

matrixsynapse is vulnerable to a Denial of Service attack. The vulnerability is due to a weakness in how the auth chain cover index is calculated, which allows an attacker to dispatch specially crafted events that induce high CPU consumption and excessive data accumulation in the database,...

CVE-2024-31208

Synapse is an open-source Matrix homeserver. 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 the V2 state resolution algorithm. This can induce high CPU consumption and accumulate...