This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-59849 →

DEBIAN-CVE-2026-59849

A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when c...

Original description

The description as published by the source.

A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:13 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.5-0+deb13u1"}]}]

Debian:14 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.1-1"}]}]

References

advisory security-tracker.debian.org