@socket.io cluster-engine vulnerabilities

Latest @socket.io cluster-engine CVEs

Newest publication first

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

   Published 2026-09-29

   High·CVSS 7.5

   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 construct...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.