CVE-2026-33151

Published: Mar 20, 2026 Last Modified: Mar 20, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. Prior to versions 3.3.5, 3.4.4, and 4.2.6, 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 issue has been patched in versions 3.3.5, 3.4.4, and 4.2.6.

20

Improper Input Validation

Stable
Common Consequences
Security Scopes Affected:
Availability Confidentiality Integrity
Potential Impacts:
Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Read Memory Read Files Or Directories Modify Memory Execute Unauthorized Code Or Commands
Applicable Platforms
All platforms may be affected
View CWE Details
754

Improper Check for Unusual or Exceptional Conditions

Incomplete
Common Consequences
Security Scopes Affected:
Integrity Availability
Potential Impacts:
Dos: Crash, Exit, Or Restart Unexpected State
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/socketio/socket.io/commit/719f9ebab0772ffb882bd614b387e585c1…
https://github.com/socketio/socket.io/commit/9d39f1f080510f036782f2177fac701cc0…
https://github.com/socketio/socket.io/commit/b25738c416c4e32fbff62ee182afa8f6d0…
https://github.com/socketio/socket.io/security/advisories/GHSA-677m-j7p3-52f9