7.6Alta
CVE-2026-106492Backstage: Improper preservation of access restrictions during service credential delegation
Descripción
Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. 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. This issue is fixed in versions 0.16.1 and 0.17.8.
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| @backstage | backend-defaults | < 0.16.1, >= 0.17.0, < 0.17.8 | |
| backstage | backstage | < 1.49.6, >= 1.50.0-next.0, < 1.54.6 | |
| linuxfoundation | backstage | < 1.49.6 | |
| linuxfoundation | backstage/backend-defaults | < 0.16.1 |
Referencias y parches
- https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v MitigationVendor Advisory
- https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124 Patch
- https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33 Patch
- https://github.com/backstage/backstage/releases/tag/v1.49.6 PatchRelease Notes
- https://github.com/backstage/backstage/releases/tag/v1.54.6 PatchRelease Notes
Coincidencias CPE (NVD) (4)
cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*< 0.16.1cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*≥ 0.17.0 < 0.17.8cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*< 1.49.6cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*≥ 1.50.0 < 1.54.6