CVE-2026-44945 — Cross-Cluster Impersonation Confused-Deputy Privilege Escalation
A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user global…
Published: 2026-08-05 · CVSS: 9.1 · CVSS 3.1
A privilege escalation vulnerability exists in Rancher's impersonation middleware (pkg/auth/requests/impersonate.go). An authenticated Rancher user with the default user global role can gain full administrative access to the Rancher control plane and transitively to all downstream clusters it manages. This 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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7