cvedb.io
CVE-2026-59843
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-07-21T12:18:57.860 · Last modified 2026-07-21T13:17:17.980

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.