CVE-2025-59823: Gardener providers vulnerable to code injection when Terraformer is used for infrastructure provisioning

Published Sep 25, 2025
·
Updated

Impact

A security vulnerability was discovered in Gardener when Terraformer is used for infrastructure provisioning. This vulnerability could allow a user with administrative privileges for a Gardener project to obtain control over the seed cluster where the shoot cluster is managed.

This CVE affects all Gardener installations where Terraformer is used/can be enabled for infrastructure provisioning with any of the affected components mentioned below.

Affected Components • gardener-extension-provider-gcp • gardener-extension-provider-azure • gardener-extension-provider-openstack • gardener-extension-provider-aws

Affected Versions • gardener-extension-provider-gcp < v1.46.0 • gardener-extension-provider-azure < v1.55.0 • gardener-extension-provider-openstack < v1.49.0 • gardener-extension-provider-aws < v1.64.0

Fixed versions • gardener-extension-provider-gcp >= v1.46.0 • gardener-extension-provider-azure >= v1.55.0 • gardener-extension-provider-openstack >= v1.49.0 • gardener-extension-provider-aws >= v1.64.0

How do I mitigate this vulnerability? Update to a fixed version.

Other sources

Project Gardener implements the automated management and operation of Kubernetes clusters as a service. Code injection may be possible in Gardener Extensions for AWS providers prior to version 1.64.0, Azure providers prior to version 1.55.0, OpenStack providers prior to version 1.49.0, and GCP providers prior to version 1.46.0. This vulnerability could allow a user with administrative privileges for a Gardener project to obtain control over the seed cluster where the shoot cluster is managed. This affects all Gardener installations where Terraformer is used/can be enabled for infrastructure provisioning with any of the affected components. This issue has been patched in Gardener Extensions for AWS providers version 1.64.0, Azure providers version 1.55.0, OpenStack providers version 1.49.0, and GCP providers version 1.46.0.

MITRE

Affected Software

8 affected componentsFixes available
Gardener Extensions for AWS<1.64.0
Gardener Extensions for Azure<1.55.0
Gardener Extensions for OpenStack<1.49.0
Gardener Extensions for GCP<1.46.0
go/github.com/gardener/gardener-extension-provider-openstack<1.49.0
1.49.0
go/github.com/gardener/gardener-extension-provider-azure<1.55.0
1.55.0
go/github.com/gardener/gardener-extension-provider-gcp<1.46.0
1.46.0
go/github.com/gardener/gardener-extension-provider-aws<1.64.0
1.64.0

Event History

Sep 25, 2025
CVE Published
via MITRE·02:17 PM
Data Sourced
via MITRE·02:17 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:16 PM
DescriptionSeverityWeakness
Advisory Published
via GitHub·04:39 PM
Data Sourced
via GitHub·04:39 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-59823?

CVE-2025-59823 is considered a high-severity vulnerability due to its potential for code injection in Gardener Extensions.

2

How do I fix CVE-2025-59823?

To mitigate CVE-2025-59823, upgrade Gardener Extensions for AWS to version 1.64.0, Azure to 1.55.0, OpenStack to 1.49.0, or GCP to 1.46.0.

3

Which versions are affected by CVE-2025-59823?

CVE-2025-59823 affects Gardener Extensions for AWS earlier than version 1.64.0, Azure before 1.55.0, OpenStack before 1.49.0, and GCP before 1.46.0.

4

What type of vulnerability is CVE-2025-59823?

CVE-2025-59823 is classified as a code injection vulnerability, allowing unauthorized command execution.

5

Who is impacted by CVE-2025-59823?

Users of Gardener Extensions for AWS, Azure, OpenStack, and GCP who have not upgraded to the specified versions are impacted by CVE-2025-59823.

Contact

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