RHSA-2026:98463: Important: cockpit security update

Published Nov 11, 2026
·
Updated

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: Denial of Service in cockpit-ws due to URL-root handling without a trailing slash (CVE-2026-91147) cockpit: Cockpit: Denial of Service via unbounded connection thread spawning (CVE-2026-91149) cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via CockpitLang cookie in sendloginhtml (CVE-2026-76235) 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.

Affected Software

25 affected componentsFixes available
redhat/cockpit<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-bridge<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debuginfo<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debugsource<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-doc<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-packagekit<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-storaged<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-system<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws-selinux<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debuginfo<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debugsource<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws-selinux<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debuginfo<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-debugsource<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit-ws-selinux<366.1-1.el9_9
366.1-1.el9_9
redhat/cockpit<366.1-1.el9_9.aa
366.1-1.el9_9.aa
redhat/cockpit-debuginfo<366.1-1.el9_9.aa
366.1-1.el9_9.aa
redhat/cockpit-debugsource<366.1-1.el9_9.aa
366.1-1.el9_9.aa
redhat/cockpit-ws<366.1-1.el9_9.aa
366.1-1.el9_9.aa
redhat/cockpit-ws-selinux<366.1-1.el9_9.aa
366.1-1.el9_9.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/cockpit to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  2. Upgrade

    Upgrade redhat/cockpit-bridge to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  3. Upgrade

    Upgrade redhat/cockpit-debuginfo to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  4. Upgrade

    Upgrade redhat/cockpit-debugsource to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  5. Upgrade

    Upgrade redhat/cockpit-doc to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  6. Upgrade

    Upgrade redhat/cockpit-packagekit to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  7. Upgrade

    Upgrade redhat/cockpit-storaged to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  8. Upgrade

    Upgrade redhat/cockpit-system to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  9. Upgrade

    Upgrade redhat/cockpit-ws to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  10. Upgrade

    Upgrade redhat/cockpit-ws-selinux to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9
  11. Upgrade

    Upgrade redhat/cockpit to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9.aa
  12. Upgrade

    Upgrade redhat/cockpit-debuginfo to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9.aa
  13. Upgrade

    Upgrade redhat/cockpit-debugsource to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9.aa
  14. Upgrade

    Upgrade redhat/cockpit-ws to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9.aa
  15. Upgrade

    Upgrade redhat/cockpit-ws-selinux to a version that resolves this vulnerability.

    Fixed in 366.1-1.el9_9.aa

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Company

Resources

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