CVE-2026-69185
Published:August 03, 2026
Updated:August 04, 2026
Socket.IO enables bidirectional and low-latency communication for every platform. Prior to 4.2.7, 3.4.5, and 3.3.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This vulnerability is fixed in 4.2.7, 3.4.5, and 3.3.6.
Affected Packages
https://github.com/socketio/socket.io.git (GITHUB):
Affected version(s) =socket.io-parser@3.4.4 <socket.io-parser@3.4.5Fix Suggestion:
Update to version socket.io-parser@3.4.5https://github.com/socketio/socket.io.git (GITHUB):
Affected version(s) =socket.io-parser@3.3.5 <socket.io-parser@3.3.6Fix Suggestion:
Update to version socket.io-parser@3.3.6https://github.com/socketio/socket.io.git (GITHUB):
Affected version(s) >=socket.io-parser@4.2.4 <socket.io-parser@4.2.7Fix Suggestion:
Update to version socket.io-parser@4.2.7socket.io-parser (NPM):
Affected version(s) >=3.4.0 <3.4.5Fix Suggestion:
Update to version 3.4.5socket.io-parser (NPM):
Affected version(s) >=1.0.1 <3.3.6Fix Suggestion:
Update to version 3.3.6socket.io-parser (NPM):
Affected version(s) >=4.0.0 <4.2.7Fix Suggestion:
Update to version 4.2.7Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.35