Backstage: Improper preservation of access restrictions during service credential delegation
Impact
An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for.
Patches
Patched in @backstage/backend-defaults version 0.17.8
Workarounds
If you're unable to upgrade immediately:
- If practical, replace restricted credentials with separate, purpose-specific unrestricted credentials scoped to trusted consumers.
- Restrict network-level access to Backstage backend API endpoints to trusted callers only.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | @backstage/backend-defaults | < 0.17.8 | 0.17.8 |
Referencias
- https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v
- https://nvd.nist.gov/vuln/detail/CVE-2026-106492
- https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124
- https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.49.6
- https://github.com/backstage/backstage/releases/tag/v1.54.6
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L- Debilidad (CWE)
CWE-269, CWE-863- Plataforma
- npm
- Paquete
@backstage/backend-defaults- Publicada
- 07.10.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-cq7v-rfgc-5c7v - CC BY 4.0
Historial de vulnerabilidades: @backstage/backend-defaults
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 6
- Primera → última
- 01.2026 10.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 2
- Media 2
- Baja 2
Divulgaciones por año
- 2026: 6
-
Backstage: Improper preservation of access restrictions during service credential delegation esta entrada
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