Description
socket.io parser is a socket.io encoder and decoder written in JavaScript complying with version 5 of socket.io-protocol. A specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process. A patch has been released in version 4.2.3.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
https://github.com/socketio/socket.io-parser/security/advisories/GHSA-cqmj-92xf-r6r9
Patch x_refsource_misc
https://github.com/socketio/socket.io-parser/commit/2dc3c92622dad113b8676be06f23b1ed46b02ced
Patch x_refsource_misc
https://github.com/socketio/socket.io-parser/commit/3b78117bf6ba7e99d7a5cfc1ba54d0477554a7f3
Release Notes x_refsource_misc
https://github.com/socketio/socket.io-parser/releases/tag/4.2.3
Scores
CVSS v3
7.3
EPSS
0.0030
EPSS Percentile
53.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-754
CWE-20
Status
published
Products (2)
npm/socket.io-parser
4.0.4 - 4.2.3npm
socket/socket.io-parser
3.4.0 - 3.4.3
Published
May 27, 2023
Tracked Since
Feb 18, 2026