{"id":"CVE-2026-22872","summary":"Capsule TenantResource RawItems Cluster-Scoped Resource Creation Vulnerability","details":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. The Capsule Controller runs with cluster-admin privileges. Although the TenantResource RawItems processing logic forcibly sets the namespace, this is ineffective for cluster-scoped resources. Prior to version 0.13.0, tenant administrators can leverage the Controller's elevated privileges to create cluster-scoped resources (such as ClusterRole and ValidatingWebhookConfiguration) that they cannot create directly, achieving cross-tenant privilege escalation and cluster-level attacks. The attack vector has a few limiting factors. This attack requires Tenant Owner privileges and requires Capsule Controller running with cluster-admin privileges (default configuration). Additionally, some clusters may have additional admission controllers blocking malicious resources. Version 0.13.0 patches this issue.","aliases":["GHSA-qjjm-7j9w-pw72","GO-2026-5584"],"modified":"2026-07-15T01:49:00.796935965Z","published":"2026-06-01T17:42:38.376Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22872.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-20","CWE-863"]},"references":[{"type":"WEB","url":"https://github.com/projectcapsule/capsule/releases/tag/v0.13.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22872.json"},{"type":"ADVISORY","url":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-qjjm-7j9w-pw72"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22872"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/projectcapsule/capsule","events":[{"introduced":"0"},{"fixed":"c6e109ca46ed7de3a0f371df75e8abc993413a64"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:projectcapsule:capsule:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.13.0"}]}}],"versions":["v0.11.2","v0.12.4","v0.12.3","v0.12.2","v0.12.1","v0.12.0","v0.11.1","v0.11.0","v0.10.9","v0.10.8","v0.10.7","v0.10.6","v0.10.5","v0.10.4","v0.10.3","v0.10.2","v0.10.1","v0.10.0","v0.9.0","v0.8.1","v0.8.0","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.7.0-rc.1","v0.6.2","v0.6.1","v0.6.0","v0.6.0-rc0","helm-v0.6.0","v0.5.0","v0.4.2","helm-v0.5.3","v0.4.1","helm-v0.5.2","helm-v0.5.1","helm-v0.4.7","v0.4.0","v0.4.0-rc.3","helm-v0.5.0","v0.4.0-rc.2","v0.4.0-rc.1","helm-v0.4.8","helm-v0.4.6","v0.3.3","helm-v0.4.4","v0.3.2","helm-v0.4.3","helm-v0.4.2","v0.3.1","helm-v0.4.1","v0.3.0","helm-v0.4.0","helm-v0.3.6","helm-v0.3.5","v0.2.1","helm-v0.3.1","helm-v0.3.4","helm-v0.3.3","helm-v0.3.2","v0.2.0","helm-v0.3.0","helm-v0.2.0","v0.1.3","helm-v0.1.12","v0.1.2","helm-v0.1.11","helm-v0.1.10","v0.1.2-rc1","v0.1.2-rc0","helm-v0.1.8","helm-v0.1.7","helm-v0.1.6","v0.1.1","helm-v0.1.4","v0.1.1-rc1","helm-v0.1.3","helm-v0.1.2","helm-v0.1.1","v0.1.1-rc0","v0.1.0","helm-v0.1.0","v0.1.0-rc6","v0.1.0-rc5","v0.1.0-rc4","v0.1.0-rc3","v0.1.0-rc2","v0.1.0-rc1","v0.0.5","v0.0.5-rc2","v0.0.5-rc1","v0.0.4","v0.0.3","v0.0.2","0.2.0-rc1","v0.0.1","0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22872.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:P"}]}