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CVE-2026-29185

Estado: AnalizadaBaja (2.7)—

Backstage is an open framework for building developer portals. Prior to version 1.20.1, a vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials. This issue has been patched in version 1.20.1.

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/integration

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-29185",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-29185",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-09T20:14:31.887741Z"
        }
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.2
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "backstage",
          "product": "backstage",
          "versions": [
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              "version": "< 1.20.1"
            }
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  ],
  "published": "2026-03-07T15:15:55.240",
  "references": [
    {
      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-95v5-prp4-5gv5",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
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  "weaknesses": [
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      "description": [
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          "lang": "en",
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      "lang": "en",
      "value": "Backstage is an open framework for building developer portals. Prior to version 1.20.1, a vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials. This issue has been patched in version 1.20.1."
    },
    {
      "lang": "es",
      "value": "Backstage es un framework abierto para construir portales de desarrolladores. Antes de la versión 1.20.1, una vulnerabilidad en el análisis de URL de SCM utilizado por las integraciones de Backstage permitía que secuencias de salto de ruta en formato codificado se incluyeran en las rutas de archivo. Cuando estas URL eran procesadas por funciones de integración que construyen URL de API, los segmentos de salto de ruta podían redirigir solicitudes a puntos finales de API de proveedores de SCM no deseados utilizando las credenciales de integración del lado del servidor configuradas. Este problema ha sido parcheado en la versión 1.20.1."
    }
  ],
  "lastModified": "2026-06-17T10:29:44.440",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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