WebSocket Protocol Handler Vulnerability in WebSocket Driver by Faye
CVE-2026-54465

6.3MEDIUM

Key Information:

Vendor

Faye

Status
Websocket-driver-ruby
Vendor
CVE Published:
17 July 2026

What is CVE-2026-54465?

The websocket-driver module, a tool for handling WebSocket protocols, previously had a vulnerability that allowed malicious peers to exploit a single connection leading to unbounded memory consumption. This could occur when an HTTP request or response contained an excessive number of headers, ultimately causing the serving process to exhaust available memory. The issue has been addressed in version 0.8.1, which mitigates the risks associated with such endless header lists.

Affected Version(s)

websocket-driver-ruby < 0.8.1

References

https://github.com/faye/websocket-driver-ruby/security/ad...
x_refsource_CONFIRM
https://github.com/faye/websocket-driver-ruby/commit/17b5...
x_refsource_MISC

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.