Incorrect Behavior Order Affecting openssh-portable package, versions [,10.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Apr 2026
- disclosed2 Apr 2026
- creditFlorian Kohnhäuser
Introduced: 2 Apr 2026
CVE-2026-35386 (opens in a new tab)How to fix?
Upgrade openssh-portable to version 10.3 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Behavior Order via injection of shell metacharacters into the username parameter. An attacker can execute arbitrary commands by supplying specially crafted input. This is only exploitable if the username is untrusted and the '%' character is configured in ssh_config.