A Cross-site request forgery (CSRF) flaw was found in Keycloak and occurs due to the lack of a unique token sent during the authentication POST request, /login-actions/authenticate. This flaw allows an attacker to craft a malicious login page and trick a legitimate user of an application into authenticating with an attacker-controlled account instead of their own.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-5203
• https://access.redhat.com/security/cve/CVE-2024-5203
• https://bugzilla.redhat.com/show_bug.cgi?id=2282572