{"id":"CVE-2026-55636","revision":"cea693c6f9bb40d1a28a9b9294e5bdf2","records":[{"revision":"cea693c6f9bb40d1a28a9b9294e5bdf2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55636","aliases":[],"title":"Capsule: Incomplete fix of CVE-2026-30963: singular/plural typo leaves namespaces/finalize unprotected","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.","state":0,"publishedAt":"2026-09-15T15:27:44.731+00:00","modifiedAt":"2026-09-15T18:02:29.068+00:00","affected":[{"ecosystem":"Vendor product","name":"capsule","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"projectcapsule\",\n                    \"product\": \"capsule\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.13.0, < 0.13.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L","score":5.7,"severity":"MEDIUM"}],"references":["https://github.com/projectcapsule/capsule/security/advisories/GHSA-gwxr-7h77-7777","https://github.com/projectcapsule/capsule/pull/1966","https://github.com/projectcapsule/capsule/commit/af2f37793e789b2301da8ed8dfb52ab60affebb6","https://github.com/projectcapsule/capsule/releases/tag/v0.13.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55636","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55636","identifiers":["CVE-2026-55636"]},"retained":false,"historicalAffected":[]}],"coverage":[]}