---
id: CVE-2026-106583
title: >-
  In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line
  username, leading to injection.
summary: >-
  In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line
  username, leading to injection.
severity: low
cvss: 2.5
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-99
  - CWE-78
vendor: openbsd
product: openssh
affected:
  - openssh < 10.6
patched:
  - openssh 10.6
published: '2026-10-07'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:18.523'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106583'
references:
  - url: 'https://www.openssh.org/releasenotes.html#10.6'
    label: cve@mitre.org
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106583.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106583'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2547243'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106583'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106583'
  - url: 'https://access.redhat.com/errata/RHSA-2026:82247'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T16:10:54.270923Z'
epss: 0.00151
epssPercentile: 0.04243
ingestedAt: '2026-10-07T00:26:32.093Z'
---

## Overview

In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

## Affected

- `openssh < 10.6`

## Remediation

Upgrade past the affected range:

- `openssh 10.6`

## Vendor advisories

- **RHSA-2026:82247** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:82247)
- **Red Hat VEX** · Low · affected: 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, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106583.json)