Improper Validation of Specified Quantity in Input Affecting openssh-portable package, versions [,10.4)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-OPENSSHPORTABLE-17895003
- published8 Jul 2026
- disclosed8 Jul 2026
- creditUnknown
Introduced: 8 Jul 2026
CVE-2026-59997 (opens in a new tab)How to fix?
Upgrade openssh-portable to version 10.4 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input due to improper handling of command-line arguments in the internal-sftp process. An attacker can bypass intended security restrictions by supplying more than nine arguments, causing critical security-related options to be ignored.