A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. An attacker can use this flaw to construct a malicious request to bypass validation and access other URLs and potentially sensitive information within the domain or possibly conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field.
Special thanks to Axel Flamcourt for reporting this issue and helping us improve our project.
{
    "nvd_published_at": "2024-04-17T14:15:07Z",
    "github_reviewed": true,
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-22"
    ],
    "github_reviewed_at": "2024-04-17T18:25:08Z"
}