CVE-2026-59725 (GCVE-0-2026-59725)
Vulnerability from cvelistv5
Published
2026-07-08 15:37
Modified
2026-07-08 17:00
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-404 - Improper Resource Shutdown or Release
Summary
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.
References
Impacted products
Vendor Product Version
socketio socket.io Version: >= 4.1.0, < 6.6.7
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