Description
Aiven Operator allows you to provision and manage Aiven Services from your Kubernetes cluster. From 0.31.0 to before 0.37.0, a developer with create permission on ClickhouseUser CRDs in their own namespace can exfiltrate secrets from any other namespace — production database credentials, API keys, service tokens — with a single kubectl apply. The operator reads the victim's secret using its ClusterRole and writes the password into a new secret in the attacker's namespace. The operator acts as a confused deputy: its ServiceAccount has cluster-wide secret read/write (aiven-operator-role ClusterRole), and it trusts user-supplied namespace values in spec.connInfoSecretSource.namespace without validation. No admission webhook enforces this boundary — the ServiceUser webhook returns nil, and no ClickhouseUser webhook exists. This vulnerability is fixed in 0.37.0.
INFO
Published Date :
2026-04-09T17:14:07.330Z
Last Modified :
2026-04-10T14:08:22.087Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-39961 vulnerability.
| Vendors | Products |
|---|---|
| Aiven |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39961.
