Backstage's scaffolder credential handling may allow unintended GitHub authentication fallback
Impact
Scaffolder actions that interact with source control systems may not consistently enforce the intended credential boundaries under certain configurations. An authenticated user could perform operations with broader access than intended.
Patches
@backstage/plugin-scaffolder-backendversion4.1.0@backstage/plugin-scaffolder-backend-module-azureversion0.2.25@backstage/plugin-scaffolder-backend-module-bitbucket-cloudversion0.3.10@backstage/plugin-scaffolder-backend-module-bitbucket-serverversion0.2.25@backstage/plugin-scaffolder-backend-module-githubversion0.9.13@backstage/plugin-scaffolder-backend-module-gitlabversion0.11.10
The fix introduces a new configuration option that enforces user-provided credentials for supported SCM actions. The new behavior is opt-in for compatibility. After upgrading, set:
scaffolder:
requireScmUserCredentials: trueBefore enabling this setting, review and update your templates as described in the software templates documentation referred to below.
Workarounds
If you cannot upgrade and enable the setting immediately:
- Restrict who can create Scaffolder tasks and which templates they can execute.
- Limit SCM integration credentials to the minimum repository read and mutation permissions required.
- Remove integration credentials for SCM hosts where all required operations can use explicitly supplied user tokens.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | @backstage/plugin-scaffolder-backend | < 4.1.0 | 4.1.0 |
| Paquete de npm | @backstage/plugin-scaffolder-backend-module-azure | < 0.2.25 | 0.2.25 |
| Paquete de npm | @backstage/plugin-scaffolder-backend-module-bitbucket-cloud | < 0.3.10 | 0.3.10 |
| Paquete de npm | @backstage/plugin-scaffolder-backend-module-bitbucket-server | < 0.2.25 | 0.2.25 |
| Paquete de npm | @backstage/plugin-scaffolder-backend-module-github | < 0.9.13 | 0.9.13 |
| Paquete de npm | @backstage/plugin-scaffolder-backend-module-gitlab | < 0.11.10 | 0.11.10 |
Referencias
- https://github.com/backstage/backstage/security/advisories/GHSA-29gx-h2m3-xw44
- https://nvd.nist.gov/vuln/detail/CVE-2026-106462
- https://github.com/backstage/backstage/commit/6fb2a41ea47da37eafe5ea744050
- https://github.com/backstage/backstage/commit/6fb2a41ea47da37eafe5ea744050ef90be6820c0
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.54.6
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N- Debilidad (CWE)
CWE-441, CWE-863- Plataforma
- npm
- Paquete
@backstage/plugin-scaffolder-backend, @backstage/plugin-scaffolder-backend-module-azure, @backstage/plugin-scaffolder-backend-module-bitbucket-cloud- Publicada
- 07.10.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-29gx-h2m3-xw44 - CC BY 4.0
Historial de vulnerabilidades: @backstage/plugin-scaffolder-backend
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
- 17
- Primera → última
- 10.2021 10.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 1
- Alta 6
- Media 8
- Baja 2
Divulgaciones por año
- 2021: 3
- 2022: 0
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 12
-
Backstage's scaffolder credential handling may allow unintended GitHub authentication fallback esta entrada
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