{"id":"SUSE-SU-2026:3463-1","summary":"Security update for libssh","details":"This update for libssh fixes the following issues:\n\n- CVE-2026-59843: denial of service via zero advertised channel packet size (bsc#1272164).\n- CVE-2026-59844: denial of service via oversized SFTP read length (bsc#1272165).\n- CVE-2026-59845: denial of service via unchecked ProxyCommand fork() failure (bsc#1272166).\n- CVE-2026-59846: information disclosure via ProxyCommand %r username expansion (bsc#1272167).\n- CVE-2026-59847: integrity downgrade via OpenSSL AES-GCM tag verification (bsc#1272168).\n- CVE-2026-59848: denial of service via SFTP responses with unknown request IDs (bsc#1272169).\n- CVE-2026-59850: use-after-free via data callbacks on closed channels (bsc#1272171).\n","modified":"2026-08-04T11:45:08.999402089Z","published":"2026-08-03T12:18:45Z","related":["CVE-2026-59843","CVE-2026-59844","CVE-2026-59845","CVE-2026-59846","CVE-2026-59847","CVE-2026-59848","CVE-2026-59850"],"upstream":["CVE-2026-59843","CVE-2026-59844","CVE-2026-59845","CVE-2026-59846","CVE-2026-59847","CVE-2026-59848","CVE-2026-59850"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263463-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272164"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272165"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272166"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272167"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272168"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272169"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272171"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59843"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59844"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59845"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59846"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59847"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59848"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-59850"}],"affected":[{"package":{"name":"libssh","ecosystem":"SUSE:Linux 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