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socket.io-parser@4.2.2 vulnerabilities

socket.io protocol parser

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Direct Vulnerabilities

Known vulnerabilities in the socket.io-parser package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • H
Denial of Service (DoS)

socket.io-parser is a socket.io protocol parser

Affected versions of this package are vulnerable to Denial of Service (DoS) due to insufficient validation when decoding a packet. An attacker can send an event with a name like '2[{"toString":"foo"}]' to trigger an uncaught exception and a crash, like the below.

TypeError: Cannot convert object to primitive value
       at Socket.emit (node:events:507:25)
       at .../node_modules/socket.io/lib/socket.js:531:14

How to fix Denial of Service (DoS)?

Upgrade socket.io-parser to version 3.4.3, 4.2.3 or higher.

>=3.4.0 <3.4.3 >=4.0.0 <4.2.3
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