Security advisory

{
  "id": "26fb5d79091d3b65b98c371eb08b0ead730592472d322ab04ae15cad95a3d96c",
  "url": "https://osv.dev/vulnerability/CVE-2020-10187",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10187",
    "summary": "Doorkeeper version 5.0.0 and later contains an information disclosure vulnerability that allows an attacker to retrieve the client secret only intended for the OAuth application owner. After authorizing the application and allowing access, the attacker simply needs to request the list of their authorized applications in a JSON format (usually GET /oauth/authorized_applications.json). An application is vulnerable if the authorized applications controller is enabled.",
    "evidence": "osv:CVE-2020-10187",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-10187",
      "aliases": [
        "CVE-2020-10187",
        "GHSA-j7vx-8mqj-cqp9"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/doorkeeper-gem/doorkeeper",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4c94445c4508cb372bc2004e74353b525359af46"
                },
                {
                  "fixed": "7e1fed05a968f6a05cea90a72ce14c60831003bb"
                },
                {
                  "introduced": "2dac191615bea7ec44f19a3e1057292f172ba016"
                },
                {
                  "fixed": "081d26bd286bf36316ad83933c04f7e6b56f5b72"
                },
                {
                  "introduced": "bef23f69ffddf120bfefe11dfb6f4243a6685bc0"
                },
                {
                  "fixed": "c8039ec4d70664e2e766fc2d39e44a321c0c0cd6"
                },
                {
                  "introduced": "38b7333ca2c37f43ef000fecd166de56c3715a7f"
                },
                {
                  "fixed": "8495a810e45abb14335b6e81a34e0815e4f0cf1d"
                },
                {
                  "fixed": "25d038022c2fcad45af5b73f9d003cf38ff491f6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0"
                      },
                      {
                        "fixed": "5.0.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "5.1.0"
                      },
                      {
                        "fixed": "5.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "5.2.0"
                      },
                      {
                        "fixed": "5.2.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "5.3.0"
                      },
                      {
                        "fixed": "5.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "25d038022c2fcad45af5b73f9d003cf38ff491f6"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.0.2",
            "v5.1.0",
            "v.5.2.4",
            "v.5.3.1",
            "v5.4.0.rc1",
            "v.5.3.0",
            "v5.2.3",
            "v5.2.2",
            "v5.2.1",
            "v5.2.0",
            "v5.0.1",
            "v5.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10187.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:58.359325136Z",
      "provider": "osv",
      "references": [
        "https://github.com/doorkeeper-gem/doorkeeper/releases",
        "https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6",
        "https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9",
        "https://github.com/rubysec/ruby-advisory-db/pull/446"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-10187",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382404,
  "published_at": "2020-05-04T14:15:13.013+00:00"
}