CVE-2026-76235
Cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via cockpitlang cookie in send_login_html
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-401 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Aug 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat OpenShift Dev Spaces
All versions affected Red Hat / Red Hat OpenShift Dev Spaces
All versions affected Red Hat / Red Hat OpenShift Dev Spaces
All versions affected References
Credits
Red Hat would like to thank Arpit Jain for reporting this issue.