---
id: CVE-2026-106582
title: >-
  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.
summary: >-
  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.
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-514
vendor: OpenBSD
product: OpenSSH
affected:
  - OpenSSH < 10.6
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T21:17:19.370'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106582'
references:
  - url: 'https://arxiv.org/abs/2609.07709'
    label: cve@mitre.org
  - url: 'https://www.openssh.org/releasenotes.html#10.6'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T21:20:28.988Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.