VulnerabilityAnalyzed
CVE-2026-35386
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line.
HIGH 8.1EPSS 0.32%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.32% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-696
- Affected
- openbsd/openssh
- Source
- cve@mitre.org
References
- https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2Third Party Advisory
- https://www.openssh.org/releasenotes.html#10.3p1Release Notes
- https://www.openwall.com/lists/oss-security/2026/04/02/3Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.