---
id: CVE-2026-110925
title: A flaw was found in OpenSSH
summary: >-
  A flaw was found in OpenSSH. A username entered on the ssh command line can
  still contain '$' or a non-trailing backslash. When a configuration expands %u
  inside ProxyCommand or Match exec, those characters are passed into the shell.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-78
vendor: Red Hat
product: openssh
affected:
  - openssh
  - openssh
  - openssh
  - openssh
  - openssh
  - openshell (all versions)
  - openssh (all versions)
  - openshift/ose-rhel-coreos-8
  - openshift/ose-rhel-coreos-9
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T06:17:01.243'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110925'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-110925'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2553034'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T05:52:45.970Z'
---

## Overview

A flaw was found in OpenSSH. A username entered on the ssh command line can still contain '$' or a non-trailing backslash. When a configuration expands %u inside ProxyCommand or Match exec, those characters are passed into the shell.

## Remediation

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