High [CVE-2026-54465] Denial of Service via unbounded memory consumption
This high-severity Red Hat Linux advisory covers CVE-2026-54465.
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Summary
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.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.
Red Hat lists Red Hat Hardened Images as not affected.
- < 0.8.1
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 0.8.1. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Discussion(0)
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