Name: CVE-2026-106582: Covert Channel
Creator: Rapid7
Published: 2026-10-06T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-106582, CWE-514, CVSS 3.7, EPSS 0.00183

In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.

CVSS Details

CVSS 3.1 Base Score: 3.7
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Openbsd Openssh	—	Upgrade to OpenSSH version 10.6	Oct 14, 2026	Oct 6, 2026
Redhat_linux	—	No solution exists	Oct 21, 2026	Oct 6, 2026
Ubuntu	—	Upgrade openssh-server-gssapiUpgrade openssh-serverUpgrade openssh-clientUpgrade openssh-client-gssapi	Oct 14, 2026	Oct 7, 2026

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CVSS Details

Covered by Rapid7

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