CVE-2026-100703
Description
A flaw was found in Kyverno. This vulnerability allows an authenticated user with permissions to create namespaced policies to access unauthorized cross-namespace data, resulting in information disclosure. Kyverno fails to restrict its global context policy evaluation library to the creator's assigned namespace, allowing policy queries to retrieve cached cluster-wide entries without validation. Consequently, a tenant can read sensitive data from namespaces they lack role-based access control (RBAC) permissions to view.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity; Bypass Protection Mechanism
The exploitation of a weakness in low-privileged areas of the software can be leveraged to reach higher-privileged areas without having to overcome any additional obstacles, extending the scope of the damage to higher-privileged users..
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