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CVE-2026-4802VulnerabilityPublished Updated

Red Hat Security Advisory: cockpit security update

Affects Red Hat cockpitSource GCVE Database

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Authoritative record:CVE-2026-4802· High 8.0

Not known to be exploited · CVSS 8.0 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
8.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

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

    Not in CISA KEV and no source reports exploitation

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

    No attack traffic recorded by OffSeq Mirage sensors

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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10cockpitAffected–Fixed in–
Red Hat Enterprise Linux 10.0 Extended Update SupportcockpitAffected–Fixed in–
Red Hat Enterprise Linux 8cockpitAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportcockpitAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Telecommunications Update ServicecockpitAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionscockpitAffected–Fixed in–

AI-suggested

Red Hat has released official security updates that fix this vulnerability. Users should apply the updated Cockpit packages provided in advisories RHSA-2026:21390 (for RHEL 10.0 EUS) and RHSA-2026:21392 (for RHEL 9.6 EUS) as soon as possible. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor beyond applying these patches.

Description

Cockpit enables users to administer GNU/Linux servers using a web browser. It offers network configuration, log inspection, diagnostic reports, SELinux troubleshooting, interactive command-line sessions, and more. Security Fix(es): * cockpit: Cockpit: Arbitrary command execution via crafted links in system logs UI (CVE-2026-4802) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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