CVE-2026-54464

### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. ### Patches The issue has been patched in version 0.8.1, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.

CVSS

No CVSS.

References

Link	Resource
https://github.com/faye/websocket-driver-ruby/commit/fa8641724f10bf3273585f1dcf9041f540bbd036
https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-33ph-fccm-39pj

Configurations

No configuration.

History

17 Jul 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 20:17

Updated : 2026-07-23 18:14

NVD link : CVE-2026-54464

Mitre link : CVE-2026-54464

CVE.ORG link : CVE-2026-54464

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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