{"id":"CVE-2020-10776","aliases":["GHSA-484q-784p-8m5h"],"url":"https://o3.security/vulnerability/CVE-2020-10776","summary":"Cross-site Scripting in keycloak","details":"A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.","published":"2020-11-17T02:15:11.910Z","modified":"2026-08-07T14:53:13.654161Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00778,"percentile":0.54204,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-server-spi-private","fixedVersion":"12.0.0"},{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"12.0.0"}],"fix":{"url":"https://github.com/keycloak/keycloak/commit/01be601dbdd77822827de173e34180d9322db85c","label":"keycloak/keycloak@01be601"},"references":[{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1847428"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10776"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/01be601dbdd77822827de173e34180d9322db85c"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T14:53:13.654161Z"}}