CVE-2026-59845

Medium

Open

TLP:CLEAR

Libssh: libssh: denial of service via unchecked proxycommand fork() failure

NVD CVE.org

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Description

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork() failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service.

Details

CVSS Score: 5.3
EPSS Score ⓘ: 0.11%

1.3th percentile
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
Confidence: 90%
Published: Jul 21, 2026
Last Modified: Aug 17, 2026

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