This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-59846 →

DEBIAN-CVE-2026-59846

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment va...

Original description

The description as published by the source.

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

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