CVE-2026-102600 Socket.IO: Prototype Pollution via Unsafe Client Session Lookup

Socket.IO enables bidirectional and low-latency communication for every platform. Prior to 0.1.1, @socket.io/cluster-engine uses inherited object properties when looking up attacker-controlled session IDs in clustered deployments. Special property names such as proto or constructor can resolve...

PT-2026-102635

Name of the Vulnerable Software and Affected Versions @socket.io/cluster-engine versions prior to 0.1.1 Description In clustered deployments, the software uses inherited object properties when looking up session IDs controlled by an attacker. By using special property names like proto or...