CVE-2026-33637

{
  "id": "CVE-2026-33637",
  "cveTags": [],
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          "id": "CVE-2026-33637",
          "role": "CISA Coordinator",
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              "exploitation": "poc"
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            {
              "automatable": "yes"
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            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-05-19T18:36:58.299461Z"
        }
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          "baseScore": 0,
          "attackVector": "NETWORK",
          "baseSeverity": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 0,
        "exploitabilityScore": 3.9
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          "integrityImpact": "LOW",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "lostisland",
          "product": "faraday",
          "versions": [
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              "status": "affected",
              "version": ">= 2.0.0, <= 2.14.2"
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  "published": "2026-05-19T19:16:49.113",
  "references": [
    {
      "url": "https://github.com/advisories/GHSA-33mh-2634-fwr2",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/lostisland/faraday/security/advisories/GHSA-5rv5-xj5j-3484",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/lostisland/faraday/security/advisories/GHSA-5rv5-xj5j-3484",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. Versions 2.0.0 through 2.14.1 still allow protocol-relative host override when the request target is passed as a URI object (rather than a String) to Faraday::Connection#build_exclusive_url. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and enables off-host request forgery: a request built from a fixed-base Faraday::Connection can be redirected to an attacker-controlled host, forwarding connection-scoped values such as Authorization headers and default query parameters. This issue has been fixed in version 2.14.3."
    },
    {
      "lang": "es",
      "value": "Faraday es una capa de abstracción de biblioteca cliente HTTP que proporciona una interfaz común sobre muchos adaptadores. Las versiones 2.0.0 a 2.14.1 aún permiten la anulación de host relativa al protocolo cuando el objetivo de la solicitud se pasa como un objeto URI (en lugar de una cadena) a Faraday::Connection#build_exclusive_url. Esto elude la corrección de febrero de 2026 para GHSA-33mh-2634-fwr2 y permite la falsificación de solicitudes fuera del host: una solicitud construida a partir de una Faraday::Connection de base fija puede ser redirigida a un host controlado por el atacante, reenviando valores con ámbito de conexión como encabezados de autorización y parámetros de consulta predeterminados. Este problema ha sido corregido en la versión 2.14.3."
    }
  ],
  "lastModified": "2026-07-24T09:10:00.153",
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