CVE-2026-110926

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Rejected reason: CVE-2026-110926 has been marked as a duplicate of CVE-2026-106582."}], "id": "CVE-2026-110926", "lastModified": "2026-10-21T07:17:17.593", "metrics": {}, "published": "2026-10-15T06:17:01.440", "references": [], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Rejected"}

{"acknowledgement": "Red Hat would like to thank Fabian B\u00e4umer and Marcus Brinkmann for reporting this issue.", "bugzilla": {"description": "openssh: openssh: shared LZ77 compression dictionary leaks plaintext across channels", "id": "2553035", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553035"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-203", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Leave Compression disabled. The client default is already off. Prefer application-level compression instead of SSH compression."}, "name": "CVE-2026-110926", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "openshell", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "openssh", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Under investigation", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Under investigation", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-110926\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-110926"], "statement": "A default OpenSSH client does not offer compression, so a default connection is not exposed. If compression is enabled, plaintext from one channel can leak to a peer who can write on another channel of the same connection.", "threat_severity": "Moderate"}

{"created": "2026-10-15T11:30:18.355635+00:00", "updated": "2026-10-15T11:30:18.355639+00:00", "vendors": []}