CVE Catalog

CVE-2026-79767

MediumCVSS 5.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.39%

30th percentile - higher than 30% of all known CVEs

Summary

Gardener before 1.142.6, 1.143.3, 1.144.2, and 1.145.0 has a vulnerability in the customverbauthorizer admission plugin's manage-members check, which does not account for Group or ServiceAccount subjects in Project.spec.members. A project administrator lacking manage-members permission can add arbitrary Group or ServiceAccount subjects, including system:authenticated, granting broad project access. This can include Shoots, Secrets, and cloud provider credentials. Fixed in 1.142.6, 1.143.3, 1.144.2, and 1.145.0.

Risk Assessment

An unauthorized project administrator can expand access to critical resources, including cloud credentials, potentially leading to severe security breaches.

Recommendation

Upgrade Gardener to one of the patched versions (1.142.6, 1.143.3, 1.144.2, or 1.145.0) or later.

Related vulnerabilities

Original NVD description (English source)

Gardener implements the automated management and operation of Kubernetes clusters as a service. Prior to 1.142.6, 1.143.3, 1.144.2, and 1.145.0, the customverbauthorizer admission plugin's mustCheckProjectMembers manage-members check compares changes to User subjects but does not account for Group or ServiceAccount subjects in Project.spec.members. A project administrator who lacks manage-members permission can add arbitrary Group or ServiceAccount subjects, including the system:authenticated Group, and thereby grant broad project access. The resulting access can include Shoots, Secrets, and cloud provider credentials. This issue is fixed in versions 1.142.6, 1.143.3, 1.144.2, and 1.145.0.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS