{"id":"CVE-2026-35091","title":"A flaw was found in Corosync","summary":"A flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This …","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cwe":["CWE-253"],"vendor":"corosync","product":"corosync","affected":["corosync","openshift = 4.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"published":"2026-04-01","updated":"2026-08-21","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-35091","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:13644","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13657","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13673","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14205","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14210","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14211","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14212","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14213","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14214","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14215","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14216","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19043","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19200","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:20916","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-35091","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453169","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453813","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00867,"epssPercentile":0.57195,"ingestedAt":"2026-08-21T14:17:57.821Z","slug":"CVE-2026-35091","body":"## Overview\n\nA flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents\n\n## Affected\n\n- `corosync`\n- `openshift = 4.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}