A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.

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Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

Restrict network access to the cockpit port to trusted clients until a fix is available. No configuration-level mitigation removes the flaw entirely, since the login page must remain reachable without authentication.

History

Wed, 19 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
Description A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.
Title Cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via cockpitlang cookie in send_login_html
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift Devspaces
Weaknesses CWE-401
CPEs cpe:/a:redhat:openshift_devspaces:3
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift Devspaces
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-19T12:44:55.680Z

Reserved: 2026-08-19T11:37:44.676Z

Link: CVE-2026-76235

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-19T13:18:11.637

Modified: 2026-08-19T13:18:11.637

Link: CVE-2026-76235

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-19T20:30:04Z

Weaknesses