PT-2026-61936 · Red Hat · Red Hat Enterprise Linux 10+3

CVE-2026-59846 · Published 2026-07-21 · Updated 2026-07-21

Mitre

CVSS v3.1

3.9

Low

Base vector

AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

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.

Fix

Related Identifiers

CVE-2026-59846

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Red Hat Hardened Images

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-59846 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2498179 · Note
• https://access.redhat.com/security/cve/CVE-2026-59846 · Note