{"id":"CVE-2026-91147","title":"A flaw was found in `cockpit-ws`","summary":"A flaw was found in `cockpit-ws`. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the `WebService.UrlRoot` is configured and a request is made t…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-617"],"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-2026-91147","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91147","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479230","label":"secalert@redhat.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-18T16:45:41.403Z","epss":0.00328,"epssPercentile":0.2605,"slug":"CVE-2026-91147","body":"## Overview\n\nA flaw was found in `cockpit-ws`. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the `WebService.UrlRoot` is configured and a request is made to the exact URL-root prefix without a trailing slash, `cockpit-ws` can terminate unexpectedly. This issue leads to the unavailability of the Cockpit web service.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}