Vulnerability Description
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, if this library is used 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 because the limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression in lib/websocket/driver/hybi.js. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. This issue is fixed in version 0.7.5.
Related Weaknesses (CWE)
References
- https://github.com/faye/websocket-driver-node/commit/c55679a5b18251dd0a55d18a0cc
- https://github.com/faye/websocket-driver-node/security/advisories/GHSA-mp7j-qc5w
FAQ
What is CVE-2026-54490?
CVE-2026-54490 is a documented vulnerability. websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, if this library is used with the permessage-deflate extension, a WebSocket server or client can be made to accept m...
How severe is CVE-2026-54490?
CVSS scoring is not yet available for CVE-2026-54490. Check NVD for updates.
Is there a patch for CVE-2026-54490?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.