{"apiVersion":"1.0","identifier":"CVE-2026-61666","description":"websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when the application does not catch the error from parse(). This issue is fixed in version 0.8.2.","publishedAt":"2026-08-17T17:16:39","lastModifiedAt":"2026-08-17T17:16:39","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61666","cvssScore":8.9,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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","epssProbability":0.00338,"riskScore":0.92,"affectedProduct":"websocket-driver","affectedVersions":"<0.8.2","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-61666","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-61666","en":"https://www.redsauce.net/en/cves/CVE-2026-61666","fr":"https://www.redsauce.net/fr/cves/CVE-2026-61666","pt":"https://www.redsauce.net/pt/cves/CVE-2026-61666","de":"https://www.redsauce.net/de/cves/CVE-2026-61666","sk":"https://www.redsauce.net/sk/cves/CVE-2026-61666","el":"https://www.redsauce.net/el/cves/CVE-2026-61666"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-61666"}}