A vulnerability was found in keycloak 7.x, when keycloak is configured with LDAP user federation and StartTLS is used instead of SSL/TLS from the LDAP server (ldaps), in this case user authentication succeeds even if invalid password has entered.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "7.0.0"
},
{
"introduced": "0"
},
{
"last_affected": "7.0.1"
}
]
}