Vulnerability DatabaseCVE-2026-59845
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CVE-2026-59845
Published:July 21, 2026
Updated:August 04, 2026
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.
Affected Packages
https://gitlab.com/libssh/libssh-mirror.git (SCM_GIT):
Affected version(s) >=libssh-0.9.0 <libssh-0.11.5
Fix Suggestion:
Update to version libssh-0.11.5
https://gitlab.com/libssh/libssh-mirror.git (SCM_GIT):
Affected version(s) =libssh-0.12.0 <libssh-0.12.1
Fix Suggestion:
Update to version libssh-0.12.1
Related Resources (3)
https://access.redhat.com/errata/RHSA-2026:42922
https://bugzilla.redhat.com/show_bug.cgi?id=2498178
https://access.redhat.com/security/cve/CVE-2026-59845
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CVSS v4
Base Score:
5.6
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
HIGH
CVSS v3
Base Score:
5.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Detection of Error Condition Without Action
CWE-390
EPSS
Base Score:
0.11