{"id":"CVE-2026-44945","aliases":["GHSA-v584-7w32-jwpq"],"url":"https://o3.security/vulnerability/CVE-2026-44945","summary":"Cross-Cluster Impersonation Confused-Deputy Privilege Escalation","details":"A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user\n global role can gain full administrative access to the Rancher control \nplane and transitively to all downstream clusters it manages.\n\nThis issue affects Rancher: from 2.11.0 before 2.11.16, from 2.12.0 before 2.12.12, from 2.13.0 before 2.13.8, and from 2.14.0 before 2.14.2.","published":"2026-08-05T10:00:04.286Z","modified":"2026-09-03T03:30:31.056010586Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.00377,"percentile":0.31426,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":{"url":"https://github.com/rancher/rancher/pull/55983","label":"rancher/rancher#55983"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44945.json"},{"type":"ADVISORY","url":"https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44945"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945"},{"type":"FIX","url":"https://github.com/rancher/rancher/pull/55983"},{"type":"PACKAGE","url":"https://github.com/rancher/rancher"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-03T03:30:31.056010586Z"}}