Backstage: Improper entity validation in deprecated Kubernetes services endpoint
### Impact An authenticated user with Kubernetes read permissions could access Kubernetes workload data beyond their intended scope by supplying crafted entity data to the deprecated services endpoint. The exposure is limited to read-only access to Kubernetes object metadata across configured clusters. ### Patches Patched in `@backstage/plugin-kubernetes-backend` version 0.21.8. ### Workarounds - Disable the deprecated `/services/:serviceId` route by deploying a custom Kubernetes router that omits it. - Restrict access to the `kubernetes.resources.read` permission to limit the set of users who can reach the endpoint.
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-106563US | medium6.5OT erhöht | — | ||
Backstage is an open framework for building developer portals. Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprec… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/backstage/backstagePACKAGE
- https://github.com/backstage/backstage/commit/2d5d3e77d630455d6d48cfa8f31fd3c126fd6f29WEB
- https://github.com/backstage/backstage/releases/tag/v1.54.1WEB
- https://github.com/backstage/backstage/security/advisories/GHSA-r9ph-3637-55pxWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-106563ADVISORY
Advisories wie diese benennen die exponierten Produkte, die Angreifer auf Ihrer Angriffsfläche ins Visier nehmen. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan