{"id":"CVE-2026-106017","aliases":["DEBIAN-CVE-2026-106017","EUVD-2026-108107","GHSA-rr4q-p38q-3hw2","UBUNTU-CVE-2026-106017"],"status":"published","title":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows...","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","severity":{"version":"4.0","score":6.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.002,"percentile":0.10002,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2026-10-22T09:18:01Z","modified":"2026-10-28T17:50:30Z","affected":[{"source":"osv","ecosystem":"Debian:13","package":"openvpn3-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["24.1+dfsg-1","25+dfsg-1","25+dfsg-2","25+dfsg-3","25+dfsg-4","26+dfsg-1","26+dfsg-2","27+dfsg-1","27.1+dfsg-1","27.1+dfsg-2"]},{"source":"osv","ecosystem":"Debian:14","package":"openvpn3-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["24.1+dfsg-1","25+dfsg-1","25+dfsg-2","25+dfsg-3","25+dfsg-4","26+dfsg-1","26+dfsg-2","27+dfsg-1","27.1+dfsg-1","27.1+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"openvpn","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"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"openvpn","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"]}],"products":[{"vendor":"openvpn","product":"openvpn 3 core library"}],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-106017","tags":["vendor-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106017"},{"url":"https://github.com/advisories/GHSA-rr4q-p38q-3hw2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-106017","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-106017","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106017","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-106017","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T09:18:01.956Z","modified":"2026-10-22T13:37:47.238Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:20:04.463704Z"}],"euvd":[{"id":"EUVD-2026-108107","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T09:18:01Z","modified":"2026-10-22T13:37:47Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T16:59:35.198677Z"}],"ghsa":[{"id":"GHSA-rr4q-p38q-3hw2","title":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows...","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T12:31:14Z","modified":"2026-10-22T12:31:19Z","cvss":[{"version":"4.0","score":6.3,"vector":"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/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","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:14:15.712154Z"}],"nvd":[{"id":"CVE-2026-106017","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T10:17:07.887Z","modified":"2026-10-22T15:25:35.333Z","cvss":[{"version":"4.0","score":6.3,"vector":"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/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:13:02.724605Z"}],"osv":[{"id":"DEBIAN-CVE-2026-106017","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T10:17:07.887Z","modified":"2026-10-25T09:00:06.730260108Z","cvss":[{"version":"4.0","score":6.3,"vector":"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/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","level":"medium"}],"updated_at":"2026-11-02T15:45:48.903138Z"},{"id":"UBUNTU-CVE-2026-106017","description":"Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.","status":"published","published":"2026-10-22T10:17:00Z","modified":"2026-10-28T17:50:30Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T16:55:59.130573Z"}]}}
