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OpenAdvisories
Medium · 6.3 CVE-2026-54465 EUVD-2026-45311GHSA-8j3g-f24p-4mpw

websocket-driver: Memory exhaustion in HTTP header parser

Published Jul 17, 2026 · Updated Jul 20, 2026 · Assigned by GitHub_M

Description

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, when websocket-driver is used to implement a WebSocket server on top of a TCP server using WebSocket::Driver.server() or to complement a WebSocket client, a peer can make a single connection consume an unbounded amount of memory by sending an HTTP request or response with a never-ending list of headers. This can lead to the receiving process running out of memory. This issue is fixed in version 0.8.1.

Affected products

VendorProductAffectedFixed
faye websocket-driver-ruby < 0.8.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 ruby-websocket-driver 0.8.1-1 —
Debian 13 ruby-websocket-driver No fix yet —
Debian 12 ruby-websocket-driver No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 ruby-websocket-driver No fix yet —
Ubuntu 26.04 LTS ruby-websocket-driver No fix yet —
Ubuntu 24.04 LTS ruby-websocket-driver No fix yet —
Ubuntu 22.04 LTS ruby-websocket-driver No fix yet —
Ubuntu 20.04 LTS ruby-websocket-driver No fix yet —
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS ruby-websocket-driver No fix yet —
Ubuntu 16.04 LTS ruby-websocket-driver No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
RubyGems websocket-driver < 0.8.1 0.8.1 GHSA-8j3g-f24p-4mpw

References