{"id":"CVE-2026-54463","summary":"websocket-driver: Memory exhaustion via abuse of protocol length headers","details":"websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.","aliases":["GHSA-ghhp-3qvg-889p"],"modified":"2026-07-22T05:30:09.891794997Z","published":"2026-07-17T20:05:17.888Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54463.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-770"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54463.json"},{"type":"ADVISORY","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":"FIX","url":"https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/faye/websocket-driver-ruby","events":[{"introduced":"0"},{"fixed":"d0141f041f6e3677a951255d547a313e732ccbe0"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"0.8.1"}]}}],"versions":["0.8.0","0.7.7","0.7.6","0.7.5","0.7.4","0.7.3","0.7.2","0.7.1","0.7.0","0.6.5","0.6.4","0.6.3","0.6.2","0.6.1","0.6.0","0.5.4","0.5.3","0.5.2","0.5.1","0.5.0","0.4.0","0.3.5","0.3.4","0.3.3","0.3.2","0.3.1","0.3.0","0.2.3","0.2.2","0.2.1","0.2.0","0.1.0","0.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54463.json"}}],"schema_version":"1.7.5","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"}]}