CVE-2026-59843 — Libssh: libssh: denial of service via zero advertised channel packet size
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 c…
Published: 2026-07-21 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7