{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55636", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T23:52:12.057Z", "datePublished": "2026-09-15T15:27:44.731Z", "dateUpdated": "2026-09-15T15:27:44.731Z"}, "containers": {"cna": {"title": "Capsule: Incomplete fix of CVE-2026-30963: singular/plural typo leaves namespaces/finalize unprotected", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777"}, {"name": "https://github.com/projectcapsule/capsule/pull/1966", "tags": ["x_refsource_MISC"], "url": "https://github.com/projectcapsule/capsule/pull/1966"}, {"name": "https://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6", "tags": ["x_refsource_MISC"], "url": "https://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6"}, {"name": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.6"}], "affected": [{"vendor": "projectcapsule", "product": "capsule", "versions": [{"version": ">= 0.13.0, < 0.13.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-15T15:27:44.731Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-gwxr-7h77-7777", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "capsule", "vendor": "projectcapsule", "versions": [{"status": "affected", "version": ">= 0.13.0, < 0.13.6"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-55636", "lastModified": "2026-09-15T16:17:14.990", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-15T16:17:14.990", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/pull/1966"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}