Resource exhaustion in Red Hat Enterprise Linux 10
CVE-2026-91149
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.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
Frequently asked questions
- What is CVE-2026-91149?
- CVE-2026-91149 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-18.
- How severe is CVE-2026-91149?
- High severity. CVSS v3 base score is 7.5 out of 10.