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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1727
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727