{"id":"CVE-2026-106487","revision":"0bddb4fefe7d446c99921c6a9cc0ed20","records":[{"revision":"0bddb4fefe7d446c99921c6a9cc0ed20","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-106487","aliases":[],"title":"Backstage: Unsupported catalog cluster authentication mode in kubernetes backend","description":"Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog contributors can create or modify kubernetes-cluster Resource entities. With the required endpoint permissions and pod RBAC, the backend can use its local in-cluster identity, potentially exposing Kubernetes resources readable by that identity. The credential is used only with the local in-cluster API endpoint and is not sent to the catalog-supplied endpoint. This issue is fixed in version 0.21.10.","state":0,"publishedAt":"2026-10-06T20:36:45.419+00:00","modifiedAt":"2026-10-09T01:49:45.471+00:00","affected":[{"ecosystem":"Vendor product","name":"backstage","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"backstage\",\n                    \"product\": \"backstage\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.54.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"plugin-kubernetes-backend","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@backstage\",\n                    \"product\": \"plugin-kubernetes-backend\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.21.10\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","score":3.5,"severity":"LOW"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-h53x-hjx6-25gr","https://github.com/backstage/backstage/commit/c14f8be6908f0f719b16356e5492352311e28946","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106487","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106487","identifiers":["CVE-2026-106487"]},"retained":false,"historicalAffected":[]}],"coverage":[]}