CVE-2026-54463

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.

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/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0	Patch
https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:faye:websocket-driver:*:*:*:*:*:ruby:*:*

History

No history.

Information

Published : 2026-07-17 20:17

Updated : 2026-08-06 16:17

NVD link : CVE-2026-54463

Mitre link : CVE-2026-54463

CVE.ORG link : CVE-2026-54463

JSON object : View

Products Affected

faye

websocket-driver

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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