CVE-2026-55636 (GCVE-0-2026-55636)
Vulnerability from cvelistv5
Published
2026-09-15 15:27
Modified
2026-09-15 18:02
CWE
  • CWE-863 - Incorrect Authorization
Summary
Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.6, charts/capsule/templates/configuration.yaml configures the validating webhook with namespace/finalize instead of the Kubernetes resource name namespaces/finalize. A user with namespaces/finalize RBAC can send a PUT request to /api/v1/namespaces/{namespace}/finalize, and the singular rule never matches the plural resource, so the validating webhook is not invoked and the user can change the namespace tenant label. matchPolicy: Equivalent does not compensate because it handles API group and version equivalence rather than resource-name errors. This vulnerability is fixed in 0.13.6.
Impacted products
Vendor Product Version
projectcapsule capsule Version: >= 0.13.0, < 0.13.6
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Show details on NVD website


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