{"id":"CVE-2020-1727","aliases":["EUVD-2020-12575","GHSA-pw23-237p-qf6r"],"status":"published","title":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to...","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00801,"percentile":0.56895,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-06-22T17:46:54Z","modified":"2026-10-24T10:30:14Z","products":[{"vendor":"[unknown]","product":"keycloak"},{"vendor":"keycloak","product":"keycloak"},{"vendor":"redhat","product":"keycloak"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1727"},{"url":"https://github.com/advisories/GHSA-pw23-237p-qf6r"}],"sources":{"cve":[{"id":"CVE-2020-1727","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","status":"published","published":"2020-06-22T17:46:54Z","modified":"2024-08-04T06:46:30.851Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:56.213477Z"}],"euvd":[{"id":"EUVD-2020-12575","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","status":"published","published":"2020-06-22T17:46:54Z","modified":"2024-08-04T06:46:30Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:08:12.086746Z"}],"ghsa":[{"id":"GHSA-pw23-237p-qf6r","title":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to...","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","status":"published","published":"2022-05-24T17:21:25Z","modified":"2023-01-29T05:03:08Z","updated_at":"2026-11-02T14:45:15.109911Z"}],"nvd":[{"id":"CVE-2020-1727","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","status":"published","published":"2020-06-22T19:15:10.717Z","modified":"2026-06-17T03:02:17.067Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:07.249892Z"}],"osv":[{"id":"CVE-2020-1727","description":"A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.","status":"published","published":"2020-06-22T19:15:10.717Z","modified":"2026-10-24T10:30:14.407595225Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:14.828228Z"}]}}