{"schemaVersion":3,"id":"MGASA-2026-0425","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated libssh packages fix security vulnerabilities\n\nStack buffer overflow in SFTP server longname construction.\n(CVE-2026-15370)\nDenial of service via zero advertised channel packet size.\n(CVE-2026-59843)\nDenial of service via oversized SFTP read length. (CVE-2026-59844)\nDenial of service via unchecked ProxyCommand fork() failure.\n(CVE-2026-59845)\nInformation disclosure via ProxyCommand %r username expansion.\n(CVE-2026-59846)\nIntegrity downgrade via OpenSSL AES-GCM tag verification.\n(CVE-2026-59847)\nDenial of service via SFTP responses with unknown request IDs.\n(CVE-2026-59848)\nDenial of service via automatic certificate authentication loop.\n(CVE-2026-59849)\nUse-after-free via data callbacks on closed channels. (CVE-2026-59850)","dates":{"published":"2026-09-20T04:25:32.000Z","modified":"2026-09-20T04:30:03.288Z","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":"mageia","product":"libssh","name":"libssh","label":"libssh","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libssh","purlType":"rpm","versions":[{"text":"< 0.11.5-1.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.11.5-1.mga10","eol":null,"hubHref":null},{"vendor":"mageia","product":"libssh","name":"libssh","label":"libssh","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libssh","purlType":"rpm","versions":[{"text":"< 0.10.6-1.3.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.10.6-1.3.mga9","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0425.html","label":"advisories.mageia.org/MGASA-2026-0425.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35983","label":"bugs.mageia.org/show_bug.cgi?id=35983","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://www.openwall.com/lists/oss-security/2026/07/21/7","label":"www.openwall.com/lists/oss-security/2026/07/21/7","hostname":"www.openwall.com","tags":["WEB"]},{"url":"https://www.libssh.org/2026/07/21/libssh-0-12-1-and-0-11-5-security-releases/","label":"www.libssh.org/2026/07/21/libssh-0-12-1-and-0-11-5-security-releases/","hostname":"www.libssh.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MIVTLBAG4MPX3WGPMVYDO2UPZB6G3ESR/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/YZ324UUCGQ4JEC4ZOJMJODWYVPSFBWUU/","label":"lists.opensuse.org/archives/…","hostname":"lists.opensuse.org","tags":["WEB"]},{"url":"https://lists.debian.org/debian-security-announce/2026/msg00321.html","label":"lists.debian.org/debian-security-announce/2026/msg00321.html","hostname":"lists.debian.org","tags":["WEB"]},{"url":"https://ubuntu.com/security/notices/USN-8699-1","label":"ubuntu.com/security/notices/USN-8699-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2026-15370","CVE-2026-59843","CVE-2026-59844","CVE-2026-59845","CVE-2026-59846","CVE-2026-59847","CVE-2026-59848","CVE-2026-59849","CVE-2026-59850"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-20T04:25:32.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-20T04:30:03.288Z","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":"2026-10-19T17:43:46.744Z","stale":false,"partial":false}}