Bug 2454506 (CVE-2026-35386) - CVE-2026-35386 OpenSSH: OpenSSH: Arbitrary command execution via shell metacharacters in username
Summary: CVE-2026-35386 OpenSSH: OpenSSH: Arbitrary command execution via shell metach...
Keywords:
Status: NEW
Alias: CVE-2026-35386
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2454961
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-02 18:02 UTC by OSIDB Bzimport
Modified: 2026-05-27 18:12 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:12389 0 None None None 2026-04-30 16:30:23 UTC
Red Hat Product Errata RHSA-2026:13380 0 None None None 2026-05-04 09:32:24 UTC
Red Hat Product Errata RHSA-2026:13381 0 None None None 2026-05-04 09:42:47 UTC
Red Hat Product Errata RHSA-2026:13383 0 None None None 2026-05-04 09:46:07 UTC
Red Hat Product Errata RHSA-2026:16059 0 None None None 2026-05-11 20:09:33 UTC
Red Hat Product Errata RHSA-2026:19069 0 None None None 2026-05-19 13:08:02 UTC
Red Hat Product Errata RHSA-2026:19219 0 None None None 2026-05-19 18:03:08 UTC
Red Hat Product Errata RHSA-2026:21298 0 None None None 2026-05-27 09:52:38 UTC
Red Hat Product Errata RHSA-2026:21398 0 None None None 2026-05-27 18:12:34 UTC

Description OSIDB Bzimport 2026-04-02 18:02:47 UTC 
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
Comment 2 errata-xmlrpc 2026-04-30 16:30:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:12389 https://access.redhat.com/errata/RHSA-2026:12389
Comment 3 errata-xmlrpc 2026-05-04 09:32:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:13380 https://access.redhat.com/errata/RHSA-2026:13380
Comment 4 errata-xmlrpc 2026-05-04 09:42:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:13381 https://access.redhat.com/errata/RHSA-2026:13381
Comment 5 errata-xmlrpc 2026-05-04 09:46:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:13383 https://access.redhat.com/errata/RHSA-2026:13383
Comment 6 errata-xmlrpc 2026-05-11 20:09:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:16059 https://access.redhat.com/errata/RHSA-2026:16059
Comment 7 errata-xmlrpc 2026-05-19 13:08:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19069 https://access.redhat.com/errata/RHSA-2026:19069
Comment 8 errata-xmlrpc 2026-05-19 18:03:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19219 https://access.redhat.com/errata/RHSA-2026:19219
Comment 9 errata-xmlrpc 2026-05-27 09:52:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:21298 https://access.redhat.com/errata/RHSA-2026:21298
Comment 10 errata-xmlrpc 2026-05-27 18:12:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:21398 https://access.redhat.com/errata/RHSA-2026:21398
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