{"id":"GO-2026-5283","revision":null,"records":[{"revision":"1307c57208464b4b91e4df93f0691170","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-39961","aliases":[],"title":"Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource","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":"2026-04-09T17:14:07.33+00:00","modifiedAt":"2026-04-10T14:08:22.087+00:00","affected":[{"ecosystem":"Vendor product","name":"aiven-operator","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"aiven\",\n                    \"product\": \"aiven-operator\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.37.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"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":"MEDIUM"}],"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://www.cve.org/CVERecord?id=CVE-2026-39961","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-39961","identifiers":["CVE-2026-39961"]},"retained":false,"historicalAffected":[]},{"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. 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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":"2026-04-09T18:17:02.053+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","score":6.8,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","score":4.9,"severity":"MEDIUM"}],"references":["https://github.com/aiven/aiven-operator/commit/032c9ba63257fdd2fddfb7f73f71830e371ff182","https://github.com/aiven/aiven-operator/releases/tag/v0.37.0","https://github.com/aiven/aiven-operator/security/advisories/GHSA-99j8-wv67-4c72"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-39961","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-269","CWE-441"],"productCriteria":["cpe:2.3:a:aiven:aiven_operator:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-09T18:17:02.053","lastModified":"2026-10-26T21:10:00.170"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-39961","identifiers":["CVE-2026-39961"]},"retained":false,"historicalAffected":[]},{"revision":"432519d6da4c4461912e5b8c251172e0","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-99j8-wv67-4c72","aliases":["CVE-2026-39961","GO-2026-5283"],"title":"Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource","description":"### Impact\nA 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.\n\nThe 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.\n\n### Patches\n\nThis vulnerability is resolved in version 0.37.0. We recommend all users update as soon as possible.\n\n### Credits\n\nCredits to Andrés Cruciani for finding and reporting the bug through our [bug bounty program](https://bugcrowd.com/aiven-mbb-og)","state":0,"publishedAt":"2026-04-10T17:22:00+00:00","modifiedAt":"2026-06-25T19:56:33.8826769+00:00","affected":[{"ecosystem":"Go","name":"github.com/aiven/aiven-operator","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.31.0"},{"kind":"fixed","version":"0.37.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/aiven/aiven-operator/security/advisories/GHSA-99j8-wv67-4c72","https://nvd.nist.gov/vuln/detail/CVE-2026-39961","https://github.com/aiven/aiven-operator/commit/032c9ba63257fdd2fddfb7f73f71830e371ff182","https://github.com/aiven/aiven-operator","https://github.com/aiven/aiven-operator/releases/tag/v0.37.0"],"sourceUrl":"https://github.com/advisories/GHSA-99j8-wv67-4c72","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-99j8-wv67-4c72","identifiers":["GHSA-99j8-wv67-4c72","CVE-2026-39961","GO-2026-5283"]},"retained":false,"historicalAffected":[]},{"revision":"343921743c864490987e83a9c1a647fc","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5283","aliases":["CVE-2026-39961","GHSA-99j8-wv67-4c72"],"title":"Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource in github.com/aiven/aiven-operator","description":"Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource in github.com/aiven/aiven-operator","state":0,"publishedAt":"2026-06-25T18:43:15+00:00","modifiedAt":"2026-06-25T19:45:24.9066255+00:00","affected":[{"ecosystem":"Go","name":"github.com/aiven/aiven-operator","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.31.0"},{"kind":"fixed","version":"0.37.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/aiven/aiven-operator/security/advisories/GHSA-99j8-wv67-4c72","https://nvd.nist.gov/vuln/detail/CVE-2026-39961","https://github.com/aiven/aiven-operator/commit/032c9ba63257fdd2fddfb7f73f71830e371ff182","https://github.com/aiven/aiven-operator/releases/tag/v0.37.0"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5283","license":"OSV · upstream source license applies","key":"osv:GO-2026-5283","identifiers":["GO-2026-5283","CVE-2026-39961","GHSA-99j8-wv67-4c72"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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