Privilege Escalation in SUSE Rancher Manager 2.15.2 via inheritedNamespacedRules
CVE-2026-88810 Published on November 2, 2026
Privilege escalation in downstream clusters via GlobalRole inheritedNamespacedRules
A privilege escalation issue was discovered in Rancher Manager's role-based access control. The inheritedNamespacedRules field of a GlobalRole propagates permissions into named namespaces of every downstream cluster managed by the Rancher instance, but it was not subject to the privilege-escalation validation applied to the other permission-carrying fields of a GlobalRole. As a result, a non-administrative user could be granted, through a global role binding, permissions in downstream clusters that exceed the permissions that user already holds. This affected SUSE Rancher 2.15.2 only, and SUSE Rancher Webhook 0.11.0 up to 0.11.4, and 0.12.0 up to 0.12.1.
Vulnerability Analysis
CVE-2026-88810 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Missing Authentication for Critical Function
The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Products Associated with CVE-2026-88810
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Affected Versions
SUSE Rancher:- Version 2.15.2 and below 2.15.3 is affected.
- Version 0.11.0 and below 0.11.4 is affected.
- Version 0.12.0 and below 0.12.1 is affected.