{"id":"GHSA-h53x-hjx6-25gr","revision":"57bdcfe85f184fe6b897cb8f28ce71dc","records":[{"revision":"57bdcfe85f184fe6b897cb8f28ce71dc","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-h53x-hjx6-25gr","aliases":["CVE-2026-106487"],"title":"Backstage: Unsupported catalog cluster authentication mode in kubernetes backend","description":"### Impact\n\nDeployments 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.\n\n### Patches\n\nPatched in `@backstage/plugin-kubernetes-backend` version `0.21.10`\n\n### Workarounds\n\n- Do not configure service account authentication through catalog-provided clusters; use the supported static configuration method when service account authentication is required.\n- Restrict catalog ingestion so untrusted users cannot create or alter Kubernetes cluster Resource entities.","state":0,"publishedAt":"2026-10-07T18:01:08+00:00","modifiedAt":"2026-10-07T18:15:12.1702596+00:00","affected":[{"ecosystem":"npm","name":"@backstage/plugin-kubernetes-backend","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.21.10"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-h53x-hjx6-25gr","https://nvd.nist.gov/vuln/detail/CVE-2026-106487","https://github.com/backstage/backstage/commit/c14f8be6908f0f719b16356e5492352311e28946","https://github.com/backstage/backstage","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://github.com/advisories/GHSA-h53x-hjx6-25gr","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-h53x-hjx6-25gr","identifiers":["GHSA-h53x-hjx6-25gr","CVE-2026-106487"]},"retained":false,"historicalAffected":[]}],"coverage":[]}