CVE-2025-59823: Gardener provider extensions vulnerable to code injection when Terraform is used for infrastructure provisioning
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.
Published Sep 25, 2025 · Updated Oct 23, 2025
Affected packages
github.com/gardener/gardener-extension-provider-aws
- Ecosystem
- Go
- Affected
- < 1.64.0
- Fixed in
- 1.64.0
- Check
go list -m github.com/gardener/gardener-extension-provider-aws
github.com/gardener/gardener-extension-provider-gcp
- Ecosystem
- Go
- Affected
- < 1.46.0
- Fixed in
- 1.46.0
- Check
go list -m github.com/gardener/gardener-extension-provider-gcp
github.com/gardener/gardener-extension-provider-azure
- Ecosystem
- Go
- Affected
- < 1.55.0
- Fixed in
- 1.55.0
- Check
go list -m github.com/gardener/gardener-extension-provider-azure
github.com/gardener/gardener-extension-provider-openstack
- Ecosystem
- Go
- Affected
- < 1.49.0
- Fixed in
- 1.49.0
- Check
go list -m github.com/gardener/gardener-extension-provider-openstack
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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.
Credited to petersutter, kon-angelo, hebelsan, JordanJordanov, donistz.
References
- https://github.com/gardener/gardener-extension-provider-aws/security/advisories/GHSA-227x-7mh8-3cf6
- https://nvd.nist.gov/vuln/detail/CVE-2025-59823
- https://github.com/gardener/gardener-extension-provider-aws/commit/cb5045fc146248296994804bbfe27bd896938bf2
- https://github.com/gardener/gardener-extension-provider-azure/commit/4573a4404969f89781ed6cf72e90554bc6ae2020
- https://github.com/gardener/gardener-extension-provider-gcp/commit/51111b4f60c33c60dfdf18b1fc50f7ec8d8f70ac
- https://github.com/gardener/gardener-extension-provider-openstack/commit/2ed6f0fe1be90fbef5d6093eb0b8325c8421b8d8
- https://github.com/gardener/gardener-extension-provider-aws/releases/tag/v1.64.0
- https://github.com/gardener/gardener-extension-provider-azure/releases/tag/v1.55.0
- https://github.com/gardener/gardener-extension-provider-gcp/releases/tag/v1.46.0
- https://github.com/gardener/gardener-extension-provider-openstack/releases/tag/v1.49.0
- https://pkg.go.dev/vuln/GO-2025-3981
- https://github.com/advisories/GHSA-227x-7mh8-3cf6
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology