CVE-2026-69185

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/socketio/socket.io/commit/7c6ef571a00656718e9e05e3b948fd1758b2a7b4
https://github.com/socketio/socket.io/commit/9c6323e5cde41bd75df3379b5fc9293664a5f240
https://github.com/socketio/socket.io/commit/ced94ffa3ac020a8f3c14eb98a3bf34acb14d291
https://github.com/socketio/socket.io/security/advisories/GHSA-2m8v-j782-fhvr

Configurations

No configuration.

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Socket.IO permite comunicación bidireccional y de baja latencia para cada plataforma. Antes de 4.2.7, 3.4.5, y 3.3.6, un paquete de Socket.IO manipulado específicamente puede hacer que el servidor espere un gran número de adjuntos binarios y los almacene en búfer, lo cual puede ser explotado para agotar la memoria del servidor. Esta vulnerabilidad está corregida en 4.2.7, 3.4.5, y 3.3.6.

Information

Published : 2026-08-03 20:17

Updated : 2026-10-23 21:10

NVD link : CVE-2026-69185

Mitre link : CVE-2026-69185

CVE.ORG link : CVE-2026-69185

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-754

Improper Check for Unusual or Exceptional Conditions

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