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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Capsule is a multi-tenancy and policy-based framework for Kubernetes. A namespace label injection vulnerability in Capsule v0.10.3 and earlier allows authenticated tenant users to inject arbitrary labels into system namespaces (kube-system, default, capsule-system), bypassing multi-tenant isolation and potentially accessing cross-tenant resources through TenantResource selectors. This vulnerability enables privilege escalation and violates the fundamental security boundaries that Capsule is designed to enforce. This vulnerability is fixed in 0.10.4."}, {"lang": "es", "value": "Capsule es un marco multiinquilino basado en pol\u00edticas para Kubernetes. Una vulnerabilidad de inyecci\u00f3n de etiquetas en espacios de nombres en Capsule v0.10.3 y versiones anteriores permite a los usuarios autenticados inyectar etiquetas arbitrarias en los espacios de nombres del sistema (kube-system, default, capsule-system), omitiendo el aislamiento multiinquilino y potencialmente accediendo a recursos entre inquilinos mediante selectores TenantResource. Esta vulnerabilidad permite la escalada de privilegios y viola los l\u00edmites de seguridad fundamentales que Capsule est\u00e1 dise\u00f1ado para aplicar. Esta vulnerabilidad se corrigi\u00f3 en la versi\u00f3n 0.10.4."}], "id": "CVE-2025-55205", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-08-18T17:15:30.117", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/commit/e1f47feade6e1695b2204407607d07c3b3994f6e"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-fcpm-6mxq-m5vv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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