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CVE-2021-41151

Estado: ModificadaMedia (4.9)—

Backstage is an open platform for building developer portals. In affected versions A malicious actor could read sensitive files from the environment where Scaffolder Tasks are run. The attack is executed by crafting a custom Scaffolder template with a `github:publish:pull-request` action and a particular source path. When the template is executed the sensitive files would be included in the published pull request. This vulnerability is mitigated by the fact that an attacker would need access to create and register templates in the Backstage catalog, and that the attack is very visible given that the exfiltration happens via a pull request. The vulnerability is patched in the `0.15.9` release of `@backstage/plugin-scaffolder-backend`.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linuxfoundation — Backstage

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-41151",
  "cveTags": [],
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          "authentication": "SINGLE",
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      "lang": "en",
      "value": "Backstage is an open platform for building developer portals. In affected versions A malicious actor could read sensitive files from the environment where Scaffolder Tasks are run. The attack is executed by crafting a custom Scaffolder template with a `github:publish:pull-request` action and a particular source path. When the template is executed the sensitive files would be included in the published pull request. This vulnerability is mitigated by the fact that an attacker would need access to create and register templates in the Backstage catalog, and that the attack is very visible given that the exfiltration happens via a pull request. The vulnerability is patched in the `0.15.9` release of `@backstage/plugin-scaffolder-backend`."
    },
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      "lang": "es",
      "value": "Backstage es una plataforma abierta para la construcción de portales para desarrolladores. En las versiones afectadas, un actor malicioso podría leer archivos confidenciales del entorno donde se ejecutan las Tareas de Scaffolder. El ataque es ejecutado al diseñar una plantilla personalizada de Scaffolder con una acción \"github:publish:pull-request\" y una ruta de origen determinada. Cuando la plantilla es ejecutada, los archivos confidenciales se incluyen en la petición de extracción publicada. Esta vulnerabilidad está mitigada por el hecho de que un atacante necesitaría acceso para crear y registrar plantillas en el catálogo de Backstage, y que el ataque es muy visible dado que la exfiltración ocurre por medio de una petición pull. La vulnerabilidad está parcheada en la versión \"0.15.9\" de \"@backstage/plugin-scaffolder-backend\""
    }
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  "lastModified": "2026-06-17T04:07:58.617",
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