{"id":"USN-8222-1","summary":"openssh vulnerabilities","details":"Christos Papakonstantinou discovered that the OpenSSH scp tool incorrectly\nhandled the legacy scp protocol (-O) option. This could result in certain\nfiles being installed setuid or setgid, contrary to expectations.\n(CVE-2026-35385)\n\nFlorian Kohnhäuser discovered that OpenSSH incorrectly handled shell\nmetacharacters in usernames within a command line. When untrusted usernames\nand non-default configurations using % in ssh_config are being used, an\nattacker could possibly use this issue to execute arbitrary code.\n(CVE-2026-35386)\n\nChristos Papakonstantinou discovered that OpenSSH incorrectly handled\nparsing the PubkeyAcceptedAlgorithms and HostbasedAcceptedAlgorithms\noptions. This could result in unintended ECDSA algorithms being used,\ncontrary to expectations. (CVE-2026-35387)\n\nMichalis Vasileiadis discovered that OpenSSH incorrectly handled\nproxy-mode multiplexing sessions. This could result in no confirmation\nbeing asked, contrary to expectations. (CVE-2026-35388)\n\nVladimir Tokarev discovered that OpenSSH incorrectly handled certificates\nwith the principal name containing a comma character when using user-trusted\nCA keys in authorized_keys and an authorized_keys principals=\"\" option\nthat lists more than one principal. This could result in inappropriate\nprincipal matching, contrary to expectations. (CVE-2026-35414)","modified":"2026-04-30T10:14:26.113062852Z","published":"2026-04-29T12:10:19Z","related":["UBUNTU-CVE-2026-35385","UBUNTU-CVE-2026-35386","UBUNTU-CVE-2026-35387","UBUNTU-CVE-2026-35388","UBUNTU-CVE-2026-35414"],"upstream":["CVE-2026-35385","CVE-2026-35386","CVE-2026-35387","CVE-2026-35388","CVE-2026-35414","UBUNTU-CVE-2026-35385","UBUNTU-CVE-2026-35386","UBUNTU-CVE-2026-35387","UBUNTU-CVE-2026-35388","UBUNTU-CVE-2026-35414"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8222-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35385"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35386"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35387"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35388"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35414"}],"affected":[{"package":{"name":"openssh","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openssh@1:8.9p1-3ubuntu0.15?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.9p1-3ubuntu0.15"}]}],"versions":["1:8.4p1-6ubuntu2","1:8.7p1-2","1:8.7p1-2build1","1:8.7p1-4","1:8.8p1-1","1:8.9p1-3","1:8.9p1-3ubuntu0.1","1:8.9p1-3ubuntu0.3","1:8.9p1-3ubuntu0.4","1:8.9p1-3ubuntu0.5","1:8.9p1-3ubuntu0.6","1:8.9p1-3ubuntu0.7","1:8.9p1-3ubuntu0.10","1:8.9p1-3ubuntu0.11","1:8.9p1-3ubuntu0.13","1:8.9p1-3ubuntu0.14"],"ecosystem_specific":{"binaries":[{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"openssh-client"},{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"openssh-server"},{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"openssh-sftp-server"},{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"openssh-tests"},{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"ssh"},{"binary_version":"1:8.9p1-3ubuntu0.15","binary_name":"ssh-askpass-gnome"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-35385","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-35386","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/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"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-35387","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-35388","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]},{"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:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8222-1.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/openssh@1:9.6p1-3ubuntu13.16?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.6p1-3ubuntu13.16"}]}],"versions":["1:9.3p1-1ubuntu3","1:9.4p1-1ubuntu1","1:9.6p1-3ubuntu1","1:9.6p1-3ubuntu2","1:9.6p1-3ubuntu11","1:9.6p1-3ubuntu12","1:9.6p1-3ubuntu13","1:9.6p1-3ubuntu13.3","1:9.6p1-3ubuntu13.4","1:9.6p1-3ubuntu13.5","1:9.6p1-3ubuntu13.7","1:9.6p1-3ubuntu13.8","1:9.6p1-3ubuntu13.9","1:9.6p1-3ubuntu13.11","1:9.6p1-3ubuntu13.12","1:9.6p1-3ubuntu13.13","1:9.6p1-3ubuntu13.14","1:9.6p1-3ubuntu13.15"],"ecosystem_specific":{"binaries":[{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"openssh-client"},{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"openssh-server"},{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"openssh-sftp-server"},{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"openssh-tests"},{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"ssh"},{"binary_version":"1:9.6p1-3ubuntu13.16","binary_name":"ssh-askpass-gnome"}],"availability":"No 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