CVE-2026-54466

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.

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 HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680	Patch
https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-07-17 21:17

Updated : 2026-08-06 15:52

NVD link : CVE-2026-54466

Mitre link : CVE-2026-54466

CVE.ORG link : CVE-2026-54466

JSON object : View

Products Affected

faye

websocket-driver

CWE

CWE-130

Improper Handling of Length Parameter Inconsistency

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