{"id":"EUVD-2026-78670","enisaUuid":"e52fb681-d409-3c3d-b424-3ff1656ff181","description":"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.","datePublished":"Sep 15, 2026, 3:27:44 PM","dateUpdated":"Sep 15, 2026, 6:02:29 PM","baseScore":5.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L","references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777\nhttps://github.com/projectcapsule/capsule/pull/1966\nhttps://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6\nhttps://github.com/projectcapsule/capsule/releases/tag/v0.13.6\n","aliases":"CVE-2026-55636\nGHSA-gwxr-7h77-7777\n","assigner":"GitHub_M","epss":0.39,"enisaIdProduct":[{"id":"74977821-864c-3c13-885f-cf4c84721169","product":{"name":"capsule","vendor":{"name":"projectcapsule"}},"product_version":"0.13.0, \u003c 0.13.6"}],"enisaIdVendor":[{"id":"bca99384-76f3-3224-9865-e35b0292d263","vendor":{"name":"projectcapsule"}}],"enisaIdVulnerability":[{"id":"011e4b55-2ef0-3204-ae56-01c623e88fcf","vulnerability":{"id":"CVE-2026-55636","description":"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.","datePublished":"Sep 15, 2026, 3:27:44 PM","dateUpdated":"Sep 15, 2026, 6:02:29 PM","status":"PUBLISHED","baseScore":5.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L","references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777\nhttps://github.com/projectcapsule/capsule/pull/1966\nhttps://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6\nhttps://github.com/projectcapsule/capsule/releases/tag/v0.13.6\n","enisa_id":"EUVD-2026-78670\n","assigner":"GitHub_M","epss":0.39,"dataProcessed":"Nov 1, 2026, 7:17:06 AM","vulnerabilityProduct":[{"id":"644ed399-3706-321b-9877-0a2dbf9b693b","product":{"name":"capsule","vendor":{"name":"projectcapsule"}},"product_version":"0.13.0, \u003c 0.13.6"}],"vulnerabilityVendor":[{"id":"c7beb5b1-c5cd-3eca-98a6-ddcc2caef132","vendor":{"name":"projectcapsule"}}]}},{"id":"3fe11835-75b6-330e-9cd2-e5dc497dd9cc","vulnerability":{"id":"GHSA-gwxr-7h77-7777","description":"Capsule: Incomplete fix of CVE-2026-30963: singular/plural typo leaves namespaces/finalize unprotected","datePublished":"Jun 17, 2026, 6:14:12 PM","dateUpdated":"Jun 17, 2026, 6:14:12 PM","baseScore":0.0,"references":"https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777\nhttps://github.com/projectcapsule/capsule\n","enisa_id":"EUVD-2026-78670\n","aliases":"CVE-2026-55636\nGHSA-gwxr-7h77-7777\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:01:46 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}