Vulnerability DatabaseCVE-2026-59844
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CVE-2026-59844
Published:July 21, 2026
Updated:August 04, 2026
A flaw was found in libssh. A remote authenticated client can issue SSH_FXP_READ requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests.
Affected Packages
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
https://gitlab.com/libssh/libssh-mirror.git (SCM_GIT):
Affected version(s) >=libssh-0.8.0 <libssh-0.11.5
Fix Suggestion:
Update to version libssh-0.11.5
Related Resources (3)
https://access.redhat.com/errata/RHSA-2026:42922
https://bugzilla.redhat.com/show_bug.cgi?id=2498177
https://access.redhat.com/security/cve/CVE-2026-59844
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Memory Allocation with Excessive Size Value
CWE-789
EPSS
Base Score:
0.51