AIKIDO-2026-11128
websocket-driver is vulnerable to Denial of Service (DoS)
69
Medium Risk
This Affects:
websocket-driverTL;DR
Draft WebSocket protocol parsers decode length headers as arbitrarily growing integers from high-bit-set bytes. A peer can stream endless 0x80+ bytes so the parsed length keeps growing without delivering payload. Ruby arbitrary-precision integers let this consume unbounded memory on a single connection. The fix closes draft-75/76 connections when parsed length exceeds the configured maximum.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
websocket-driver is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 0.8.0.
How to fix this
Upgrade the websocket-driver library to the patch version.
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