Is CVE-2026-44945 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-44945?

CVE-2026-44945 has a CVSS v3 severity of CRITICAL (9.1).

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CVE-2026-44945

Description

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.