CVE-2026-59845: Libssh: libssh: denial of service via unchecked proxycommand fork() failure

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-07-25

Last Updated

2026-08-11

EPSS Score

0.10% (percentile: 1.1%)

Affected Products (2)

Other

• 21431-17084
• 21700-17084

Revision History

• 2026-07-25: Information published.
• 2026-08-07: Information published.
• 2026-08-11: Information published.