Moderate severityNVD Advisory· Published Jul 30, 2026· Updated Jul 31, 2026
Capsule: Incomplete fix of CVE-2026-22872: TenantResource RawItems and Generators still allow cluster-scoped resource creation (cross-tenant privilege escalation)
CVE-2026-65835
Description
Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.8, after the incomplete CVE-2026-22872 fix, TenantResource RawItems and Generators in internal/controllers/resources/collect.go, including handleRawItem and handleGeneratorItem, did not apply the ResourceReference.LoadResources and IsNamespacedGVK cluster-scoped resource rejection guard used by NamespacedItems, allowing a Tenant Owner to create cluster-scoped resources such as ClusterRole or ValidatingWebhookConfiguration through the cluster-admin controller client. This issue is fixed in version 0.13.8.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/projectcapsule/capsuleGo | >= 0.13.0, < 0.13.8 | 0.13.8 |
Affected products
1- Range: <=0.13.8
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-jr6p-8pjj-mfx6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-65835ghsaADVISORY
- github.com/projectcapsule/capsule/releases/tag/v0.13.8ghsax_refsource_MISCWEB
- github.com/projectcapsule/capsule/security/advisories/GHSA-jr6p-8pjj-mfx6ghsax_refsource_CONFIRMWEB
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