{"id":"CVE-2026-59847","summary":"Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification","details":"A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection.","modified":"2026-09-06T03:46:21.261724434Z","published":"2026-07-21T13:18:18.146Z","related":["ALSA-2026:55855","ALSA-2026:62217","ALSA-2026:62218","CGA-v4cc-8cp3-wgr7","SUSE-SU-2026:22940-1","SUSE-SU-2026:22948-1","SUSE-SU-2026:22956-1","SUSE-SU-2026:23056-1","SUSE-SU-2026:23168-1","SUSE-SU-2026:3302-1","SUSE-SU-2026:3330-1","SUSE-SU-2026:3463-1","openSUSE-SU-2026:11377-1","openSUSE-SU-2026:21444-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59847.json","cna_assigner":"redhat","cwe_ids":["CWE-253"]},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:42922"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:55855"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:62217"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:62218"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-59847"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59847.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59847"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2498180"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/libssh/libssh-mirror","events":[{"introduced":"79900e5246da9a1712d8822a53aaf5fd0abc6f40"},{"fixed":"a09fdd00416e53b6ed436df6ff14339a4f884601"},{"introduced":"50313883f3a077458cde4ea95bf46bfeb0771b34"},{"last_affected":"50313883f3a077458cde4ea95bf46bfeb0771b34"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*","cpe:2.3:a:libssh:libssh:0.12.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0.9.0"},{"fixed":"0.11.5"},{"introduced":"0.12.0"},{"last_affected":"0.12.0"}]}}],"versions":["0.12.0","libssh-0.12.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59847.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}