Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Faye | Websocket-Driver | < 0.8.1 |
Related Weaknesses (CWE)
References
- https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547Patch
- https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvgVendor Advisory
FAQ
What is CVE-2026-54463?
CVE-2026-54463 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 lar...
How severe is CVE-2026-54463?
CVE-2026-54463 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54463?
Check the references section above for vendor advisories and patch information. Affected products include: Faye Websocket-Driver.