{"id":"GHSA-8j3g-f24p-4mpw","summary":"websocket-driver: Memory exhaustion in HTTP header parser","details":"### Impact\n\nIf 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.\n\n### Patches\n\nThe issue has been patched in version 0.8.1, by limiting the total size of HTTP request/response lines and headers accepted by the parser to 32 kB. All users should upgrade to this version.\n\n### Workarounds\n\nNo known workarounds exist.\n\n### Acknowledgements\n\nThis issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.","aliases":["CVE-2026-54465"],"modified":"2026-09-10T03:50:51.663838014Z","published":"2026-07-15T22:05:39Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-07-15T22:05:39Z","nvd_published_at":"2026-07-17T20:17:26Z","cwe_ids":["CWE-400","CWE-770"],"severity":"MODERATE"},"references":[{"type":"WEB","url":"https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-8j3g-f24p-4mpw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54465"},{"type":"WEB","url":"https://github.com/faye/websocket-driver-ruby/commit/17b569f232896e71d458404ccf4854f80e987710"},{"type":"PACKAGE","url":"https://github.com/faye/websocket-driver-ruby"},{"type":"WEB","url":"https://github.com/faye/websocket-driver-ruby/releases/tag/0.8.1"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/websocket-driver/CVE-2026-54465.yml"},{"type":"WEB","url":"https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-54465"}],"affected":[{"package":{"name":"websocket-driver","ecosystem":"RubyGems","purl":"pkg:gem/websocket-driver"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.1"}]}],"versions":["0.1.0","0.2.0","0.2.1","0.2.2","0.2.3","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.4.0","0.5.0","0.5.1","0.5.2","0.5.3","0.5.4","0.6.0","0.6.1","0.6.2","0.6.3","0.6.4","0.6.5","0.7.0","0.7.1","0.7.2","0.7.3","0.7.4","0.7.5","0.7.6","0.7.7","0.8.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-8j3g-f24p-4mpw/GHSA-8j3g-f24p-4mpw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L"}]}