🛡️ CVE-2026-54465 on Ubuntu — ruby-websocket-driver

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-54465 as tracked by Ubuntu, for the package ruby-websocket-driver. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

UBUNTU-CVE-2026-54465 is classified as CWE-400: Uncontrolled Resource Consumption. A request can consume memory, CPU or storage without limit, exhausting capacity for everyone else.

Affected software

UBUNTU-CVE-2026-54465 is recorded against 1 package.

ruby-websocket-driver

Timeline and source

Published on 17 July 2026 and last revised on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-17

Updated 2026-08-11

Modified 2026-08-07

Fix URL N/A

Affected Packages

Software	From version	Fixed in
ruby-websocket-driver	—	—

References

REPORT https://ubuntu.com/security/CVE-2026-54465

REPORT https://www.cve.org/CVERecord?id=CVE-2026-54465

REPORT https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-8j3g-f24p-4mpw

🔗 NVD 🔗 Mitre

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