{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:faraday_project:faraday:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.0.0"
              },
              {
                "last_affected": "2.14.2"
              },
              {
                "fixed": "2.14.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0a5714e8c89bb0aacf414ed00e70b9d70b4097e2"
            },
            {
              "fixed": "2ecd5e05388303087c3f6872ef7f98f260e9560f"
            }
          ],
          "repo": "https://github.com/lostisland/faraday",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33637.json"
  },
  "details": "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.",
  "id": "CVE-2026-33637",
  "modified": "2026-07-15T01:49:03.823746391Z",
  "published": "2026-05-19T17:44:42.557Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33637.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-33mh-2634-fwr2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/lostisland/faraday/security/advisories/GHSA-5rv5-xj5j-3484"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33637"
    }
  ],
  "related": [
    "GHSA-33mh-2634-fwr2",
    "GHSA-5rv5-xj5j-3484"
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Faraday: Protocol-relative URI objects still bypass host scoping (possible incomplete fix for GHSA-33mh-2634-fwr2)"
}