{"api_version":"1","generated_at":"2026-07-23T13:05:37+00:00","cve":"CVE-2023-46254","urls":{"html":"https://cve.report/CVE-2023-46254","api":"https://cve.report/api/cve/CVE-2023-46254.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-46254","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-46254"},"summary":{"title":"CVE-2023-46254","description":"capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. A bug in the RoleBinding reflector used by `capsule-proxy` gives ServiceAccount tenant owners the right to list Namespaces of other tenants backed by the same owner kind and name. For example consider two tenants `solar` and `wind`. Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`. Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`. The Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct. The bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions: 1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`) and 2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces. This vulnerability doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-11-06 19:15:00","updated_at":"2023-11-14 19:35:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://github.com/projectcapsule/capsule-proxy/commit/615202f7b02eaec7681336bd63daed1f39ae00c5","name":"https://github.com/projectcapsule/capsule-proxy/commit/615202f7b02eaec7681336bd63daed1f39ae00c5","refsource":"MISC","tags":[],"title":"fix(rolebinding-reflector): namespaced name for serviceaccount users · projectcapsule/capsule-proxy@615202f · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/projectcapsule/capsule-proxy/security/advisories/GHSA-6758-979h-249x","name":"https://github.com/projectcapsule/capsule-proxy/security/advisories/GHSA-6758-979h-249x","refsource":"MISC","tags":[],"title":"Owners of different tenants but with the same ServiceAccount name can see Namespaces of colliding tenants · Advisory · projectcapsule/capsule-proxy · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-46254","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46254","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"46254","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"clastix","cpe5":"capsule","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"46254","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"clastix","cpe5":"capsule-proxy","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-46254","qid":"995842","title":"GO (Go) Security Update for github.com/projectcapsule/capsule (GHSA-6758-979h-249x)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-46254","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. 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This vulnerability doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","cweId":"CWE-200"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"projectcapsule","product":{"product_data":[{"product_name":"capsule-proxy","version":{"version_data":[{"version_affected":"=","version_value":"< 0.4.5"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/projectcapsule/capsule-proxy/security/advisories/GHSA-6758-979h-249x","refsource":"MISC","name":"https://github.com/projectcapsule/capsule-proxy/security/advisories/GHSA-6758-979h-249x"},{"url":"https://github.com/projectcapsule/capsule-proxy/commit/615202f7b02eaec7681336bd63daed1f39ae00c5","refsource":"MISC","name":"https://github.com/projectcapsule/capsule-proxy/commit/615202f7b02eaec7681336bd63daed1f39ae00c5"}]},"source":{"advisory":"GHSA-6758-979h-249x","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-11-06 19:15:00","lastModifiedDate":"2023-11-14 19:35:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":1.4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:clastix:capsule:*:*:*:*:*:*:*:*","versionEndExcluding":"0.4.5","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:clastix:capsule-proxy:*:*:*:*:*:*:*:*","versionEndExcluding":"0.4.5","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}