GHSA-R635-G3XR-VW7X Socket.IO: Engine.IO Polling Transport Connection Exhaustion

Impact An unauthenticated remote attacker can cause a denial of service in affected versions of engine.io by opening Engine.IO polling sessions and sending an invalid binary POST request with: Content-Type: application/octet-stream against an Engine.IO protocol v4 polling transport. In the...

EUVD-2026-42313

Socket.IO: Engine.IO Polling Transport Connection Exhaustion...

CVE-2026-59725

A flaw was found in Socket.IO, specifically within the Engine.IO protocol v4 polling transport. An unauthenticated attacker can exploit this vulnerability by sending invalid binary POST requests with a Content-Type of application/octet-stream. This improper handling of requests prevents the HTTP...

socket.io: engine.io: Socket.IO: Denial of Service via invalid binary POST requests

A flaw was found in Socket.IO, specifically within the Engine.IO protocol v4 polling transport. An unauthenticated attacker can exploit this vulnerability by sending invalid binary POST requests with a Content-Type of application/octet-stream. This improper handling of requests prevents the HTTP...

CVE-2026-59725

CVE-2026-59725 affects Socket.IO’s Engine.IO polling transport (versions 4.1.0–6.6.6). The root cause is that invalid binary POST requests with Content-Type: application/octet-stream are not properly closing the HTTP response, enabling unauthenticated attackers to exhaust server-side connections ...

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...

EUVD-2022-1064

Malicious code in bioql PyPI...

GHSA-J4F2-536G-R55M Resource exhaustion in engine.io

Engine.IO before 4.0.0 and 3.6.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

CVE-2020-36048

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

AZL-44673 CVE-2020-36048 affecting package js-jquery 3.5.0-4

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

CVE-2020-36048

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

Design/Logic Flaw

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

CVE-2020-36048

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...

CVE-2020-36048

Engine.IO before 4.0.0 allows attackers to cause a denial of service resource consumption via a POST request to the long polling transport...