CVE-2026-59843

CVE-2026-59843CVE-2026-59843

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.

Scoring

CVSS 6.5 ()
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Last modified2026-07-21
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.