CVE-2026-44945

EUVD-2026-53298

05.08.2026, 10:17

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.

Confused Deputy

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
suse	CNA	9.1 CRITICAL	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 51%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
suse	rancher	2.11.0 ≤ 𝑥 < 2.11.16	CNA
suse	rancher	2.12.0 ≤ 𝑥 < 2.12.12	CNA
suse	rancher	2.13.0 ≤ 𝑥 < 2.13.8	CNA
suse	rancher	2.14.0 ≤ 𝑥 < 2.14.2	CNA

Common Weakness Enumeration

CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

Vulnerability Media Exposure

[GERMAN] Rancher: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Rancher ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.
Published: 2026-07-30T22:00:00+00:00

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