Allocation of Resources Without Limits or Throttling Affecting ruby-websocket-driver package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUBYWEBSOCKETDRIVER-18016478
  • published19 Jul 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

CVE-2026-54463  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest ruby-websocket-driver.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-websocket-driver package and not the ruby-websocket-driver package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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 Base Scores

version 3.1