RCE in Red Hat Enterprise Linux 10
CVE-2026-4631
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 req…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.265 (96.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Red Hat Enterprise Linux 10 — versions 0:344-3.el10_1
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:334.1-3.el10_0
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:344-2.el9_7
- Red Hat Enterprise Linux 9.6 Extended Update Support — versions 0:334.2-2.el9_6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- RHSA-2026:7381 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2026:7382 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2026:7383 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2026:7384 (vendor-advisory, x_refsource_REDHAT)
- access.redhat.com/security/cve/CVE-2026-4631 (vdb-entry, x_refsource_REDHAT)
- RHBZ#2450246 (issue-tracking, x_refsource_REDHAT)
Frequently asked questions
- What is CVE-2026-4631?
- CVE-2026-4631 is a critical-severity vulnerability in Red Hat Enterprise Linux 10, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-04-07.
- How severe is CVE-2026-4631?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-4631 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.