{"id":"CVE-2026-54466","revision":null,"records":[{"revision":"5f3838e4c6994ec59ec093ce13d3d7ea","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-54466","aliases":[],"title":"websocket-driver: Message corruption via abuse of protocol length headers","description":"websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the 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 client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.","state":0,"publishedAt":"2026-07-17T20:53:24.769+00:00","modifiedAt":"2026-07-20T19:11:09.339+00:00","affected":[{"ecosystem":"Vendor product","name":"websocket-driver-node","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"faye\",\n                    \"product\": \"websocket-driver-node\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.7.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":9.2,"severity":"CRITICAL"}],"references":["https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6","https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-54466","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-54466","identifiers":["CVE-2026-54466"]},"retained":false,"historicalAffected":[]},{"revision":"e5df1626be2f492bbea5873c8a6d8cd6","observedAt":"2026-10-25T13:17:28.253+00:00","statement":{"source":"nvd","id":"CVE-2026-54466","aliases":[],"title":"websocket-driver is a WebSocket protocol handler with pluggable I/O. 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This issue is fixed in version 0.7.5.","state":0,"publishedAt":"2026-07-17T21:17:08.657+00:00","modifiedAt":"2026-10-24T20:10:00.137+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":9.2,"severity":"CRITICAL"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680","https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54466","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-130"],"productCriteria":["cpe:2.3:a:faye:websocket-driver:*:*:*:*:*:ruby:*:*"],"sourceDates":{"published":"2026-07-17T21:17:08.657","lastModified":"2026-10-24T20:10:00.137"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54466","identifiers":["CVE-2026-54466"]},"retained":false,"historicalAffected":[]},{"revision":"080c290199b3491c915e632c313bd77b","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-xv26-6w52-cph6","aliases":["CVE-2026-54466"],"title":"websocket-driver: Message corruption via abuse of protocol length headers","description":"### 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 client can make the server parse these bytes into an ever-growing integer. Since JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly.\n\n### Patches\n\nThe issue has been patched in version 0.7.5 by rejecting the message if the length header exceeds the configured maximum message length. 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.","state":0,"publishedAt":"2026-07-15T22:07:24+00:00","modifiedAt":"2026-09-10T03:51:12.6710934+00:00","affected":[{"ecosystem":"npm","name":"websocket-driver","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.7.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6","https://github.com/faye/websocket-driver-node","https://github.com/faye/websocket-driver-node/releases/tag/0.7.5"],"sourceUrl":"https://github.com/advisories/GHSA-xv26-6w52-cph6","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xv26-6w52-cph6","identifiers":["GHSA-xv26-6w52-cph6","CVE-2026-54466"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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