{"id":"CVE-2026-110926","title":"A flaw was found in OpenSSH","summary":"A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-203"],"vendor":"Red Hat","product":"openssh","affected":["openssh","openssh","openssh","openssh","openssh","openshell","openssh (all versions)","openshift/ose-rhel-coreos-8","openshift/ose-rhel-coreos-9"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:33:26.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110926","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-110926","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553035","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-110926.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110926"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110926"},{"url":"https://access.redhat.com/errata/RHSA-2026:82247","label":"RHSA-2026:82247"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T13:15:00.361119Z"},"ingestedAt":"2026-10-15T05:52:45.969Z","epss":0.00302,"epssPercentile":0.21596,"slug":"CVE-2026-110926","body":"## Overview\n\nA flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · no fix planned: Red Hat Hardened Images · updated 2026-10-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-110926.json)","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}