{"id":"EUVD-2026-20965","revision":"cc184f52be584ba681d94a52e4f04cfc","records":[{"revision":"cc184f52be584ba681d94a52e4f04cfc","observedAt":"2026-10-28T05:00:24.82+00:00","statement":{"source":"euvd","id":"EUVD-2026-20965","aliases":["CVE-2026-39961","GHSA-99j8-wv67-4c72"],"title":"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 ot…","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","score":6.8,"severity":null}],"references":["https://github.com/aiven/aiven-operator/security/advisories/GHSA-99j8-wv67-4c72","https://github.com/aiven/aiven-operator/commit/032c9ba63257fdd2fddfb7f73f71830e371ff182","https://github.com/aiven/aiven-operator/releases/tag/v0.37.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-20965","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 9, 2026, 5:14:07 PM","dateUpdated":"Apr 10, 2026, 2:08:22 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-20965","identifiers":["EUVD-2026-20965","CVE-2026-39961","GHSA-99j8-wv67-4c72"]},"retained":false,"historicalAffected":[]}],"coverage":[]}