{"id":"CVE-2026-91149","title":"A flaw was found in Cockpit","summary":"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 nu…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"Red Hat","product":"cockpit","affected":["cockpit (all versions)","cockpit (all versions)","cockpit (all versions)","cockpit (all versions)","devspaces/udi-base-rhel10 (all versions)","devspaces/udi-base-rhel9 (all versions)","devspaces/udi-rhel9 (all versions)"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:06:08.407","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91149","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91149","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479422","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-18T16:48:28.909025Z"},"ingestedAt":"2026-09-18T16:45:41.404Z","epss":0.00347,"epssPercentile":0.28258,"slug":"CVE-2026-91149","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}