CVE-2026-106487
Tenable Plugin
Checking the public Tenable catalog…
Threat Intelligence Pending
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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.
Quick Facts
| CVE ID | CVE-2026-106487 |
| CVSS Score | 3.5 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
| Published | 2026-10-06 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |