PT-2026-30912 · Red Hat · Red Hat Enterprise Linux 10+3

Published 2026-04-07 · Updated 2026-04-07 · CVE-2026-4631

NVD

CVSS v3.1

9.8

Critical

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

Cockpit's remote login feature passes user-supplied hostnames and usernames from the web interface to the SSH client without validation or sanitization. An attacker with network access to the Cockpit web service can craft a single HTTP request to the login endpoint that injects malicious SSH options or shell commands, achieving code execution on the Cockpit host without valid credentials. The injection occurs during the authentication flow before any credential verification takes place, meaning no login is required to exploit the vulnerability.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-4631

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-4631 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2450246 · Note
• https://access.redhat.com/security/cve/CVE-2026-4631 · Note