7.5

CVE-2026-59725

Socket.IO: Engine.IO Polling Transport Connection Exhaustion

Socket.IO enables bidirectional and low-latency communication for every platform. From 4.1.0 before 6.6.7, Engine.IO protocol v4 polling transport does not properly close the HTTP response for invalid binary POST requests with Content-Type: application/octet-stream, allowing an unauthenticated attacker to exhaust server-side connections and sockets. This issue is fixed in version 6.6.7.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Socket ≫ Engine.Io SwPlatformnode.js Version >= 4.1.0 < 6.6.7
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.35% 0.275
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-404 Improper Resource Shutdown or Release

The product does not release or incorrectly releases a resource before it is made available for re-use.

https://github.com/socketio/socket.io/releases/tag/engine.io@6.6.7
Release Notes
https://github.com/socketio/socket.io/security/advisories/GHSA-r635-g3xr-vw7x
Patch
Vendor Advisory
https://github.com/socketio/socket.io/commit/fc11285e14964c2132d122164bf130c355f60671
Patch