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CVE-2023-35926

Estado: ModificadaCrítica (9.9)—

Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been `vm2`, but in light of several past vulnerabilities and existing vulnerabilities that may not have a fix, the plugin has switched to using a different sandbox library. A malicious actor with write access to a registered scaffolder template could manipulate the template in a way that allows for remote code execution on the scaffolder-backend instance.

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This was only exploitable in the template YAML definition itself and not by user input data. This is vulnerability is fixed in version 1.15.0 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-2023-35926",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2024-12-05T17:47:53.884189Z"
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    }
  ],
  "lastModified": "2026-06-17T06:05:28.840",
  "configurations": [
    {
      "nodes": [
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