{"schemaVersion":3,"id":"USN-8222-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"openssh vulnerabilities\n\nChristos 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)","dates":{"published":"2026-04-29T12:10:19.000Z","modified":"2026-06-30T18:15:56.370Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"openssh","name":"openssh","label":"openssh","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/openssh","purlType":"deb","versions":[{"text":"< 1:8.9p1-3ubuntu0.15","noFixRecorded":false,"fixedIn":null},{"text":"< 1:9.6p1-3ubuntu13.16","noFixRecorded":false,"fixedIn":null},{"text":"< 1:10.0p1-5ubuntu5.4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:10.2p1-2ubuntu3.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:8.9p1-3ubuntu0.15 | < 1:9.6p1-3ubuntu13.16 | < 1:10.0p1-5ubuntu5.4 | < 1:10.2p1-2ubuntu3.2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8222-1","label":"ubuntu.com/security/notices/USN-8222-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-35385","label":"ubuntu.com/security/CVE-2026-35385","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35386","label":"ubuntu.com/security/CVE-2026-35386","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35387","label":"ubuntu.com/security/CVE-2026-35387","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35388","label":"ubuntu.com/security/CVE-2026-35388","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35414","label":"ubuntu.com/security/CVE-2026-35414","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-35385","CVE-2026-35386","CVE-2026-35387","CVE-2026-35388","CVE-2026-35414"]},"timeline":[{"kind":"published","date":"2026-04-29T12:10:19.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-30T18:15:56.370Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T14:29:48.996Z","stale":false,"partial":false}}