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.
Published: 2026-08-19
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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.

Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6474-1 cockpit security update
History

Tue, 25 Aug 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 21 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Dev Spaces
Vendors & Products Redhat openshift Dev Spaces

Thu, 20 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


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'}


Subscriptions

Redhat Enterprise Linux Openshift Dev Spaces Openshift Devspaces
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-25T01:50:25.746Z

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

Link: CVE-2026-76235

cve-icon Vulnrichment

Updated: 2026-08-25T01:50:21.956Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-08-25T03:16:58.367

Link: CVE-2026-76235

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-19T00:00:00Z

Links: CVE-2026-76235 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T21:16:36Z

Weaknesses