cvedb.io
CVE-2021-41254
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2021-11-12T18:15:07.600 · Last modified 2026-06-17T04:08:11.080

Summary

kustomize-controller is a Kubernetes operator, specialized in running continuous delivery pipelines for infrastructure and workloads defined with Kubernetes manifests and assembled with Kustomize. Users that can create Kubernetes Secrets, Service Accounts and Flux Kustomization objects, could execute commands inside the kustomize-controller container by embedding a shell script in a Kubernetes Secret. This can be used to run `kubectl` commands under the Service Account of kustomize-controller, thus allowing an authenticated Kubernetes user to gain cluster admin privileges. In affected versions multitenant environments where non-admin users have permissions to create Flux Kustomization objects are affected by this issue. This vulnerability was fixed in kustomize-controller v0.15.0 (included

Affected products

fluxcd — kustomize-controller

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.