Socket.IO: Zero-attachment Memory Exhaustion

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0063, the 50th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 3 Aug 2026. New records show when each source confirmed them.

Sources

• GitHub Advisory Database: GHSA-2m8v-j782-fhvr
• OSV: GHSA-2m8v-j782-fhvr
• github.com/socketio/socket.io/security/advisories/GHSA-2m8v-j782-fhvr
• github.com/socketio/socket.io/commit/7c6ef571a00656718e9e05e3b948fd1758b2a7b4
• github.com/socketio/socket.io/commit/9c6323e5cde41bd75df3379b5fc9293664a5f240
• github.com/socketio/socket.io/commit/ced94ffa3ac020a8f3c14eb98a3bf34acb14d291
• github.com/socketio/socket.io

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.