{"id":"USN-8577-1","summary":"openssh vulnerability","details":"USN-8222-1 fixed a vulnerability in OpenSSH. This update provides the\ncorresponding fix for Ubuntu 16.04 LTS.\n\nOriginal advisory details:\n\n Vladimir Tokarev discovered that OpenSSH incorrectly handled certificates\n with the principal name containing a comma character when using user-trusted\n CA keys in authorized_keys and an authorized_keys principals=\"\" option\n that lists more than one principal. This could result in inappropriate\n principal matching, contrary to expectations. (CVE-2026-35414)","modified":"2026-07-21T23:14:34.887863337Z","published":"2026-07-21T12:17:17Z","related":["UBUNTU-CVE-2026-35414"],"upstream":["CVE-2026-35414","UBUNTU-CVE-2026-35414"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8577-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35414"}],"affected":[{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openssh?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2p2-4ubuntu2.10+esm9"}]}],"versions":["1:6.9p1-2","1:6.9p1-3","1:7.1p1-1","1:7.1p1-3","1:7.1p1-4","1:7.1p1-6","1:7.1p2-1","1:7.1p2-2","1:7.2p1-1","1:7.2p2-1","1:7.2p2-2","1:7.2p2-3","1:7.2p2-4","1:7.2p2-4ubuntu1","1:7.2p2-4ubuntu2.1","1:7.2p2-4ubuntu2.2","1:7.2p2-4ubuntu2.4","1:7.2p2-4ubuntu2.5","1:7.2p2-4ubuntu2.6","1:7.2p2-4ubuntu2.7","1:7.2p2-4ubuntu2.8","1:7.2p2-4ubuntu2.10","1:7.2p2-4ubuntu2.10+esm1","1:7.2p2-4ubuntu2.10+esm2","1:7.2p2-4ubuntu2.10+esm3","1:7.2p2-4ubuntu2.10+esm4","1:7.2p2-4ubuntu2.10+esm5","1:7.2p2-4ubuntu2.10+esm6","1:7.2p2-4ubuntu2.10+esm7","1:7.2p2-4ubuntu2.10+esm8"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_name":"openssh-client","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_name":"openssh-client-ssh1","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_name":"openssh-server","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm9","binary_name":"openssh-sftp-server"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm9","binary_name":"ssh"},{"binary_name":"ssh-askpass-gnome","binary_version":"1:7.2p2-4ubuntu2.10+esm9"},{"binary_name":"ssh-krb5","binary_version":"1:7.2p2-4ubuntu2.10+esm9"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2026-35414","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8577-1.json"}}],"schema_version":"1.7.5"}