{"id":"UBUNTU-CVE-2026-45736","details":"ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.","modified":"2026-06-30T18:18:16.236650755Z","published":"2026-05-15T15:16:00Z","upstream":["CVE-2026-45736"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45736"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-45736"},{"type":"REPORT","url":"https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx"},{"type":"REPORT","url":"https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"}],"affected":[{"package":{"name":"node-ws","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.2+ds1.349b7460-1","1.0.1+ds1.e6ddaae4-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.1+ds1.e6ddaae4-1","binary_name":"node-ws"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0+ds1.e6ddaae4-3build1","1.1.0+ds1.e6ddaae4-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-ws","binary_version":"1.1.0+ds1.e6ddaae4-3ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0+ds1.e6ddaae4-5","7.2.1-2","7.2.1-3"],"ecosystem_specific":{"binaries":[{"binary_version":"7.2.1-3","binary_name":"node-ws"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.4.2+~cs18.0.8-2","7.5.5+~cs13.0.13-1","8.5.0+~cs13.3.3-2"],"ecosystem_specific":{"binaries":[{"binary_version":"8.5.0+~cs13.3.3-2","binary_name":"node-ws"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.11.0+~cs13.7.3-1","8.11.0+~cs13.7.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"node-ws","binary_version":"8.11.0+~cs13.7.3-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.18.0+~cs14.5.15-1","8.18.1+~cs14.18.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-ws","binary_version":"8.18.1+~cs14.18.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}},{"package":{"name":"node-ws","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-ws?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.18.1+~cs14.18.2-1","8.19.0+~cs14.19.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-ws","binary_version":"8.19.0+~cs14.19.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45736.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}