{"cve":"CVE-2019-9837","nvd":{"published":"2019-03-21T16:01:17.280","modified":"2026-06-17T02:44:41.640","status":"Modified","description":"Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"references":["https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md","https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61","https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66","https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md","https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61"],"products":["openid:openid_connect"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2019-9837","score":0.01349,"percentile":0.71496,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vv4c-g6q7-p3q7","url":"https://osv.dev/vulnerability/GHSA-vv4c-g6q7-p3q7","summary":"Doorkeeper-openid_connect contains Open Redirect","modified":"2023-11-08T04:01:47.891295Z","packages":[{"ecosystem":"RubyGems","name":"doorkeeper-openid_connect","purl":"pkg:gem/doorkeeper-openid_connect","ranges":[">=1.4.0 <1.5.4"],"fixed":["1.5.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}