CVE-2026-39961

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-114658 Grav Login plugin from 3.6.0 before 3.9.13 contains a missing authorization vulnerability… CWE-269
• CVE-2026-53614 util-linux is a random collection of Linux utilities. CWE-269
• CVE-2026-95837 containerd is an open-source container runtime. CWE-269
• CVE-2026-63349 AnyIO is a high level asynchronous concurrency and networking framework that works on top… CWE-269
• CVE-2026-92957 vm2 through 3.11.6 does not normalize `node:`-prefixed builtin specifiers when evaluating… CWE-269
• CVE-2026-92958 vm2 through 3.11.6 contains a builtin-module denylist bypass in NodeVM. CWE-269
• CVE-2026-74925 The MultiVendorX WordPress plugin before 5.0.16 does not restrict who can update its role… CWE-269
• CVE-2026-75777 IBM Aspera Enterprise WebApps 1.0.0 through 1.0.5 could allow a local attacker to escape… CWE-269