CVE-2026-54465: websocket-driver: Memory exhaustion in HTTP header parser
(updated )
If this library is used to implement a WebSocket server on top of a TCP server (rather than an HTTP server or framework) using the WebSocket::Driver.server() method, or, if it is used to complement a WebSocket client, then 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.
References
- github.com/advisories/GHSA-8j3g-f24p-4mpw
- github.com/faye/websocket-driver-ruby/commit/17b569f232896e71d458404ccf4854f80e987710
- github.com/faye/websocket-driver-ruby/releases/tag/0.8.1
- github.com/faye/websocket-driver-ruby/security/advisories/GHSA-8j3g-f24p-4mpw
- github.com/rubysec/ruby-advisory-db/blob/master/gems/websocket-driver/CVE-2026-54465.yml
- nvd.nist.gov/vuln/detail/CVE-2026-54465
- www.cve.org/CVERecord/SearchResults?query=CVE-2026-54465
Code Behaviors & Features
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