CVE-2026-44945

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.

CVSS 3.1

9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-25)

CWEs

CWE-441, CWE-497

Published

2026-08-05

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44945
• https://github.com/rancher/rancher/pull/55983
• https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq

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