npm/engine.io CVE-2026-59725: high 7.5, EPSS 0.64%
Socket.IO: Engine.IO Polling Transport Connection Exhaustion
Action: Upgrade engine.io to 6.6.7 or later.
npm i engine.io@6.6.7Affected
| introduced | fixed | last affected |
|---|---|---|
| 4.1.0 | 6.6.7 | - |
Fixed versions
| 6.6.7 |
Sources
- osv: GHSA-r635-g3xr-vw7x
- https://github.com/socketio/socket.io/security/advisories/GHSA-r635-g3xr-vw7x
- https://nvd.nist.gov/vuln/detail/CVE-2026-59725
- https://github.com/socketio/socket.io/commit/fc11285e14964c2132d122164bf130c355f60671
- https://github.com/socketio/socket.io
- https://github.com/socketio/socket.io/releases/tag/engine.io@6.6.7
CVE-2026-59725 · published · modified · JSON