CVE-2026-59843
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Jul 21, 2026
Vendor
unknown
Description
A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.