CVE-2026-35386 Details
Description
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.
A command injection vulnerability has been identified in OpenSSH versions prior to 10.3. This issue arises when shell metacharacters are included in usernames on the command line, allowing for arbitrary command execution. The vulnerability requires that the username is untrusted and that specific non-default configurations are applied in ssh_config.
Users are advised to update to OpenSSH version 10.3 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2 | [email protected] | Third Party Advisory |
| https://www.openssh.org/releasenotes.html#10.3p1 | [email protected] | Release Notes |
| https://www.openwall.com/lists/oss-security/2026/04/02/3 | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-696 | Incorrect Behavior Order | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openbsd openssh | >= 10.0, < 10.3 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jul 7, 2026 | Modified Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | New CVE Received | [email protected] |