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VulnerabilityPublished Updated

CVE-2026-4631: Red Hat Enterprise Linux 10 cockpit · OS Command Injection

Affects Red Hat Enterprise Linux 10 cockpitSource CVE Database V5

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Public exploit available (Exploit-DB) · 15% EPSS · CVSS 9.8 Critical : upgrade the Red Hat redhat/cockpit package to 10.0.1 or 9.6.1 as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
15.4% chance of exploitation in 30 days – higher than 96% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.0.1, 9.6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 7 Apr 2026

  2. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  3. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Red Hat, Inc.

    , 15 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 16 minutes after disclosure

  4. , 44 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade the Red Hat redhat/cockpit package to 10.0.1 or 9.6.1.

Affected software

ProductAffectedFixed in
Red Hatredhat/cockpitpkg:rpm/redhat/cockpitOther threatsAffected
  • <9.6.1
  • <10.0.1
Fixed in
  • 9.6.1
  • 10.0.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released official security updates for Cockpit that address this vulnerability. Users should apply the updates provided in advisories RHSA-2026:7381 and RHSA-2026:7382 as soon as possible. Before applying these updates, ensure all previously released errata relevant to the system have been applied. Refer to Red Hat's guidance at https://access.redhat.com/articles/11258 for update instructions. No other mitigation or workaround is indicated by the vendor advisory.

Description

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.

References

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