{"id":"CVE-2020-10187","aliases":["GHSA-j7vx-8mqj-cqp9"],"url":"https://o3.security/vulnerability/CVE-2020-10187","summary":"Exposure of Sensitive Information to an Unauthorized Actor in Doorkeeper","details":"### Impact\nInformation disclosure vulnerability. Allows an attacker to see all `Doorkeeper::Application` model attribute values (including secrets) using authorized applications controller if it's enabled (GET /oauth/authorized_applications.json).\n\n### Patches\n\nThese versions have the fix:\n\n* 5.0.3\n* 5.1.1\n* 5.2.5\n* 5.3.2\n\n### Workarounds\nPatch `Doorkeeper::Application` model `#as_json(options = {})` method and define only those attributes you want to expose.\n\nAdditional recommended hardening is to enable application secrets hashing ([guide](https://doorkeeper.gitbook.io/guides/security/token-and-application-secrets)), available since Doorkeeper 5.1. This would render the exposed secret useless.\n\n### References\n\n- Commit with fix: https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6\n- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10187","published":"2020-05-04T14:15:13.013Z","modified":"2026-10-20T10:50:58.359325136Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.02016,"percentile":0.79956,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"doorkeeper","fixedVersion":"5.0.3"},{"ecosystem":"RubyGems","name":"doorkeeper","fixedVersion":"5.1.1"},{"ecosystem":"RubyGems","name":"doorkeeper","fixedVersion":"5.2.5"},{"ecosystem":"RubyGems","name":"doorkeeper","fixedVersion":"5.3.2"}],"fix":{"url":"https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6","label":"doorkeeper-gem/doorkeeper@25d0380"},"references":[{"type":"ADVISORY","url":"https://github.com/doorkeeper-gem/doorkeeper/releases"},{"type":"FIX","url":"https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6"},{"type":"FIX","url":"https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9"},{"type":"FIX","url":"https://github.com/rubysec/ruby-advisory-db/pull/446"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10187"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/doorkeeper/CVE-2020-10187.yml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:50:58.359325136Z"}}