{"id":"UBUNTU-CVE-2026-61666","details":"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.","modified":"2026-08-19T13:32:18.344748838Z","published":"2026-08-17T17:16:00Z","upstream":["CVE-2026-61666"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-61666"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-61666"}],"affected":[{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-1","0.6.3-1build1","0.6.3-2","0.6.3-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-websocket-driver","binary_version":"0.6.3-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"}},{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-2build1","0.6.3-2build2","0.6.3-2build3"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-websocket-driver","binary_version":"0.6.3-2build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"}},{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-2build3","0.6.3-2build4"],"ecosystem_specific":{"binaries":[{"binary_version":"0.6.3-2build4","binary_name":"ruby-websocket-driver"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"}},{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-3build1","0.6.3-3build2","0.6.3-3build3"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-websocket-driver","binary_version":"0.6.3-3build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"}},{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-3build5","0.6.3-3build6","0.6.3-3build7"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-websocket-driver","binary_version":"0.6.3-3build7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.json"}},{"package":{"name":"ruby-websocket-driver","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/ruby-websocket-driver?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.3-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-websocket-driver","binary_version":"0.6.3-3ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61666.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:H/SC:N/SI:N/SA:H"},{"type":"Ubuntu","score":"medium"}]}