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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-91149

Cockpit: cockpit: denial of service via unbounded connection thread spawning

Description

A flaw was found in Cockpit. An unauthenticated remote attacker can exploit this vulnerability by initiating and sustaining numerous simultaneous connections to the `cockpit-tls` service. This forces the service to create an unbounded number of detached threads, consuming system resources such as memory and file descriptors. The primary consequence is a denial of service (DoS), leading to degradation or complete unavailability of the Cockpit service for legitimate users.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

Red Hat Red Hat Enterprise Linux 7

Default version status: affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

Red Hat Red Hat OpenShift Dev Spaces

Default version status: unaffected

Red Hat Red Hat OpenShift Dev Spaces

Default version status: unaffected

Red Hat Red Hat OpenShift Dev Spaces

Default version status: unaffected

References