{"id":"UBUNTU-CVE-2026-106017","details":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","modified":"2026-10-27T04:16:19.142834884Z","published":"2026-10-26T00:00:00Z","upstream":["CVE-2026-106017"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-106017"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-106017"},{"type":"REPORT","url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-106017"}],"affected":[{"package":{"name":"openvpn","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-4ubuntu1","2.3.2-5ubuntu1","2.3.2-7ubuntu1","2.3.2-7ubuntu2","2.3.2-7ubuntu3","2.3.2-7ubuntu3.1","2.3.2-7ubuntu3.2","2.3.2-7ubuntu3.2+esm1","2.3.2-7ubuntu3.2+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.3.2-7ubuntu3.2+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.7-1ubuntu1","2.3.7-2ubuntu1","2.3.8-1ubuntu1","2.3.10-1ubuntu1","2.3.10-1ubuntu2","2.3.10-1ubuntu2.1","2.3.10-1ubuntu2.2","2.3.10-1ubuntu2.2+esm1","2.3.10-1ubuntu2.2+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.3.10-1ubuntu2.2+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.3-4ubuntu1","2.4.4-1ubuntu1","2.4.4-2ubuntu1","2.4.4-2ubuntu1.1","2.4.4-2ubuntu1.2","2.4.4-2ubuntu1.3","2.4.4-2ubuntu1.5","2.4.4-2ubuntu1.6","2.4.4-2ubuntu1.7","2.4.4-2ubuntu1.7+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.4.4-2ubuntu1.7+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.7-1ubuntu2","2.4.7-1ubuntu2.20.04.2","2.4.7-1ubuntu2.20.04.3","2.4.7-1ubuntu2.20.04.4","2.4.12-0ubuntu0.20.04.1","2.4.12-0ubuntu0.20.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.4.12-0ubuntu0.20.04.2","binary_name":"openvpn"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.1-3ubuntu1","2.5.1-3ubuntu2","2.5.1-3ubuntu4","2.5.1-3ubuntu5","2.5.5-1ubuntu1","2.5.5-1ubuntu3","2.5.5-1ubuntu3.1","2.5.9-0ubuntu0.22.04.2","2.5.9-0ubuntu0.22.04.3","2.5.11-0ubuntu0.22.04.1","2.5.11-0ubuntu0.22.04.3","2.5.11-0ubuntu0.22.04.4","2.5.11-0ubuntu0.22.04.5","2.5.11-0ubuntu0.22.04.6"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.5.11-0ubuntu0.22.04.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.5-0ubuntu1","2.6.7-1ubuntu1","2.6.9-1ubuntu2","2.6.9-1ubuntu3","2.6.9-1ubuntu4","2.6.9-1ubuntu4.1","2.6.12-0ubuntu0.24.04.1","2.6.12-0ubuntu0.24.04.3","2.6.14-0ubuntu0.24.04.1","2.6.14-0ubuntu0.24.04.2","2.6.14-0ubuntu0.24.04.3","2.6.19-0ubuntu0.24.04.1","2.6.19-0ubuntu0.24.04.2","2.6.19-0ubuntu0.24.04.3","2.6.19-0ubuntu0.24.04.4","2.6.19-0ubuntu0.24.04.5"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.6.19-0ubuntu0.24.04.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.0-1ubuntu1","2.7.3-1ubuntu2","2.7.5-1ubuntu2","2.7.5-1ubuntu3","2.7.7-1ubuntu1","2.7.7-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.7.7-1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/openvpn?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.14-2ubuntu1","2.6.15-1ubuntu1","2.7.0~rc5-1ubuntu5","2.7.0~rc6-1ubuntu1","2.7.0-1ubuntu1","2.7.0-1ubuntu1.1","2.7.0-1ubuntu1.2","2.7.0-1ubuntu1.3","2.7.0-1ubuntu1.4"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.7.0-1ubuntu1.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-106017.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U"},{"type":"Ubuntu","score":"medium"}]}