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Vulnerability of Node.js socket.io: information disclosure via CORS Misconfiguration

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via CORS Misconfiguration of Node.js socket.io, in order to obtain sensitive information.
Impacted software: Nodejs Modules ~ not comprehensive.
Severity of this computer vulnerability: 2/4.
Creation date: 22/02/2021.
Références of this announce: NPM-1609, VIGILANCE-VUL-34642.

Description of the vulnerability 

An attacker can bypass access restrictions to data via CORS Misconfiguration of Node.js socket.io, in order to obtain sensitive information.
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This computer weakness impacts software or systems such as Nodejs Modules ~ not comprehensive.

Our Vigil@nce team determined that the severity of this vulnerability note is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this cybersecurity threat.

Solutions for this threat 

Node.js socket.io: version 2.4.0.
The version 2.4.0 is fixed:
  https://www.npmjs.com/package/socket.io
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