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CVE-2023-41338

Estado: ModificadaMedia (5.3)—

Fiber is an Express inspired web framework built in the go language. Versions of gofiber prior to 2.49.2 did not properly restrict access to localhost. This issue impacts users of our project who rely on the `ctx.IsFromLocal` method to restrict access to localhost requests. If exploited, it could allow unauthorized access to resources intended only for localhost. Setting `X-Forwarded-For: 127.0.0.1` in a request from a foreign host, will result in true for `ctx.IsFromLocal`. Access is limited to the scope of the affected process. This issue has been patched in version `2.49.2` with commit `b8c9ede6`. Users are advised to upgrade. There are no known workarounds to remediate this vulnerability without upgrading to the patched version.

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)

Gofiber — Fiber

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2023-41338",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2024-09-26T13:59:21.650864Z"
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  "published": "2023-09-08T19:15:43.977",
  "references": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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      "lang": "en",
      "value": "Fiber is an Express inspired web framework built in the go language. Versions of gofiber prior to 2.49.2 did not properly restrict access to localhost. This issue impacts users of our project who rely on the `ctx.IsFromLocal` method to restrict access to localhost requests. If exploited, it could allow unauthorized access to resources intended only for localhost. Setting `X-Forwarded-For: 127.0.0.1` in a request from a foreign host, will result in true for `ctx.IsFromLocal`. Access is limited to the scope of the affected process. This issue has been patched in version `2.49.2` with commit `b8c9ede6`. Users are advised to upgrade. There are no known workarounds to remediate this vulnerability without upgrading to the patched version. "
    },
    {
      "lang": "es",
      "value": "Fiber es un framework web inspirado en Express creado en el lenguaje Go. Las versiones de gofiber anteriores a la 2.49.2 no restringían adecuadamente el acceso a localhost. Este problema afecta a los usuarios de nuestro proyecto que dependen del método `ctx.IsFromLocal` para restringir el acceso a las solicitudes de localhost. Si se explota, podría permitir el acceso no autorizado a recursos destinados únicamente a localhost. Configurar `X-Forwarded-For: 127.0.0.1` en una solicitud de un host externo dará como resultado verdadero para `ctx.IsFromLocal`. El acceso está limitado al alcance del proceso afectado. Este problema se solucionó en la versión `2.49.2` con el commit `b8c9ede6`. Se recomienda a los usuarios que actualicen. No se conocen soluciones para remediar esta vulnerabilidad sin actualizar a la versión parcheada."
    }
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  "lastModified": "2026-06-17T06:21:51.730",
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