From b768b327e39e2e465d18b770f309fd142c43badb Mon Sep 17 00:00:00 2001
From: soupette <cyril@strapi.io>
Date: Tue, 4 Jan 2022 09:52:27 +0100
Subject: [PATCH] Fixes #12089

Signed-off-by: soupette <cyril@strapi.io>
---
 .../admin/src/pages/AuthPage/components/Register/index.js    | 5 ++++-
 packages/core/admin/admin/src/pages/AuthPage/utils/forms.js  | 2 ++
 packages/core/admin/admin/src/translations/en.json           | 1 +
 .../helper-plugin/lib/src/utils/translatedErrors/index.js    | 1 +
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/core/admin/admin/src/pages/AuthPage/components/Register/index.js b/packages/core/admin/admin/src/pages/AuthPage/components/Register/index.js
index 8d0104aea1..a020a87465 100644
--- a/packages/core/admin/admin/src/pages/AuthPage/components/Register/index.js
+++ b/packages/core/admin/admin/src/pages/AuthPage/components/Register/index.js
@@ -178,7 +178,10 @@ const Register = ({ fieldsToDisable, noSignin, onSubmit, schema }) => {
                         : undefined
                     }
                     required
-                    label={formatMessage({ id: 'Auth.form.email.label', defaultMessage: 'Email' })}
+                    label={formatMessage({
+                      id: 'Auth.form.email.label',
+                      defaultMessage: 'Email',
+                    })}
                     type="email"
                   />
                   <PasswordInput
diff --git a/packages/core/admin/admin/src/pages/AuthPage/utils/forms.js b/packages/core/admin/admin/src/pages/AuthPage/utils/forms.js
index e47573b7f6..2ff74190d3 100644
--- a/packages/core/admin/admin/src/pages/AuthPage/utils/forms.js
+++ b/packages/core/admin/admin/src/pages/AuthPage/utils/forms.js
@@ -94,6 +94,8 @@ const forms = {
       email: yup
         .string()
         .email(translatedErrors.email)
+        .strict()
+        .lowercase(translatedErrors.lowercase)
         .required(translatedErrors.required),
       confirmPassword: yup
         .string()
diff --git a/packages/core/admin/admin/src/translations/en.json b/packages/core/admin/admin/src/translations/en.json
index 8dff8a2553..a51ff8bee0 100644
--- a/packages/core/admin/admin/src/translations/en.json
+++ b/packages/core/admin/admin/src/translations/en.json
@@ -407,6 +407,7 @@
   "components.Input.error.password.noMatch": "Passwords do not match",
   "components.Input.error.validation.email": "This is an invalid email",
   "components.Input.error.validation.json": "This doesn't match the JSON format",
+  "components.Input.error.validation.lowercase": "The value must be a lowercase string",
   "components.Input.error.validation.max": "The value is too high.",
   "components.Input.error.validation.maxLength": "The value is too long.",
   "components.Input.error.validation.min": "The value is too low.",
diff --git a/packages/core/helper-plugin/lib/src/utils/translatedErrors/index.js b/packages/core/helper-plugin/lib/src/utils/translatedErrors/index.js
index 642e18cc52..557e92dbb8 100644
--- a/packages/core/helper-plugin/lib/src/utils/translatedErrors/index.js
+++ b/packages/core/helper-plugin/lib/src/utils/translatedErrors/index.js
@@ -1,6 +1,7 @@
 const errorsTrads = {
   email: 'components.Input.error.validation.email',
   json: 'components.Input.error.validation.json',
+  lowercase: 'components.Input.error.validation.lowercase',
   max: 'components.Input.error.validation.max',
   maxLength: 'components.Input.error.validation.maxLength',
   min: 'components.Input.error.validation.min',