{"id":"DEBIAN-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":"2026-10-25T09:00:06.730260108Z","published":"2026-10-22T10:17:07.887Z","upstream":["CVE-2026-106017"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-106017"}],"affected":[{"package":{"name":"openvpn3-client","ecosystem":"Debian:13","purl":"pkg:deb/debian/openvpn3-client?arch=source&distro=trixie"},"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"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106017.json"}},{"package":{"name":"openvpn3-client","ecosystem":"Debian:14","purl":"pkg:deb/debian/openvpn3-client?arch=source&distro=forky"},"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"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106017.json"}}],"schema_version":"1.9.0","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/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"}]}