High 8.1Published Apr 2, 2026

CVE-2026-35386In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line.

Updated under an hour ago (2026-10-19 09:40 UTC)

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It affects openbsd openssh. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 8.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-696
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

openbsd openssh openbsd:openssh	from 10.0 before 10.3	NVD

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.