CVE-2026-35386

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2Advisory
• https://www.openssh.org/releasenotes.html#10.3p1
• https://www.openwall.com/lists/oss-security/2026/04/02/3Advisory