{"id":"GHSA-ghhp-3qvg-889p","summary":"websocket-driver: Memory exhaustion via abuse of protocol length headers","details":"### Impact\n\nThe frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values `0x80` or above, a server or client can make the other peer parse these bytes into an ever-growing integer. Since Ruby integers are arbitrary precision, this can be used to make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory.\n\n### Patches\n\nThe issue has been patched in version 0.8.1. 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-2026-54463"],"modified":"2026-09-10T03:50:52.264963603Z","published":"2026-07-15T22:01:52Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-15T22:01:52Z","nvd_published_at":"2026-07-17T20:17:26Z","cwe_ids":["CWE-400","CWE-770"]},"references":[{"type":"WEB","url":"https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54463"},{"type":"WEB","url":"https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0"},{"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-2026-54463.yml"},{"type":"WEB","url":"https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-54463"}],"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-ghhp-3qvg-889p/GHSA-ghhp-3qvg-889p.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L"}]}