Security advisory

{
  "id": "c0ddafbbd39fa479c3e8be780e2ddcc532906a3731de47f467c00d4bfaf514e2",
  "url": "https://osv.dev/vulnerability/CVE-2017-11173",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-11173",
    "summary": "Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.",
    "evidence": "osv:CVE-2017-11173",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-11173",
      "aliases": [
        "CVE-2017-11173",
        "GHSA-2j9c-9vmv-7m39"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cyu/rack-cors",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6ae0bc825a56b24fa6e221e6daaed73cd7e4aedb"
                },
                {
                  "fixed": "42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:rack-cors_project:rack-cors:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.4.0",
            "v0.3.1",
            "v0.3.0",
            "v0.2.9",
            "v0.2.8",
            "v0.2.7",
            "v0.2.6",
            "v0.2.5",
            "v0.2.4",
            "v0.2.3",
            "v0.2.2",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-11173.json"
          }
        }
      ],
      "modified": "2026-10-20T10:47:28.788828714Z",
      "provider": "osv",
      "references": [
        "https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html",
        "https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2017-11173",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 379420,
  "published_at": "2017-07-13T03:29:00.217+00:00"
}