CVE-2026-44945

Critical

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.

SeverityCritical

CVSS9.1

Exploit probability—

Product

Rancher

PublishedAug 5, 2026

First seenAug 5, 2026

Weakness typeCWE-441CWE-441 CWE-497CWE-497

How to fix

Update

SUSE Rancher2.11.16, 2.12.12, 2.13.8, 2.14.2 or later

Patches

github.com/rancher/rancher/pull/55983

Vendor advisories

github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq

Affected products

Product	Affected versions	Fixed in
SUSE Rancher	2.11.0 ≤ v < 2.11.16, 2.12.0 ≤ v < 2.12.12, 2.13.0 ≤ v < 2.13.8, 2.14.0 ≤ v < 2.14.2	2.11.16, 2.12.12, 2.13.8, 2.14.2

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.