Flux is an open and extensible continuous delivery solution for Kubernetes. Path Traversal in the kustomize-controller via a malicious `kustomization.yaml` allows an attacker to cause a Denial of Service at the controller level. Workarounds include automated tooling in the user's CI/CD pipeline to validate `kustomization.yaml` files conform with specific policies. This vulnerability is fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0. Users are recommended to upgrade.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/fluxcd/kustomize-controller(Go) | 0.16.0 | 0.24.0 | N/A |
| github.com/fluxcd/flux2(Go) | 0.19.0 | 0.29.0 | N/A |
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