Merge pull request #4433 from NerdyLuffy/BugFix/API-register-user-mail-validation

Add Email validation on user register

packages/strapi-plugin-users-permissions/controllers/Auth.js

@@ -448,6 +448,14 @@ module.exports = {
 
     if (isEmail) {
       params.email = params.email.toLowerCase();
+    } else {
+      return ctx.badRequest(
+        null,
+        formatError({
+          id: 'Auth.form.error.email.format',
+          message: 'Please provide valid email address.',
+        })
+      );
     }
 
     params.role = role.id;