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

EPSS Score

0.11% (percentile: 1.5%)

Affected Products (1)

Other

• 21431-17084

Revision History

• 2026-07-25: Information published.