CVE-2026-59846

Description

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.

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Produits concernés

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat Hardened Images
• Libssh libssh
• Redhat hardened images
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-78
• CWE-77

Références

• https://access.redhat.com/errata/RHSA-2026:42922 Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:55855
• https://access.redhat.com/errata/RHSA-2026:62217
• https://access.redhat.com/errata/RHSA-2026:62218
• https://access.redhat.com/security/cve/CVE-2026-59846 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2498179 Issue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories