From ed4677557c3195935da574ba60e7a22177f83f6c Mon Sep 17 00:00:00 2001
From: Matheus Barbosa Silva
 <36537004+matheusbsilva137@users.noreply.github.com>
Date: Mon, 7 Nov 2022 15:12:14 -0300
Subject: [PATCH] [FIX] User merge by e-mail on OAuth is case-sensitive
 (#27167)

---
 apps/meteor/app/models/server/models/Users.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/meteor/app/models/server/models/Users.js b/apps/meteor/app/models/server/models/Users.js
index e94a2458104bc..181fbfdeb9172 100644
--- a/apps/meteor/app/models/server/models/Users.js
+++ b/apps/meteor/app/models/server/models/Users.js
@@ -689,7 +689,7 @@ export class Users extends Base {
 
 	findOneByEmailAddressAndServiceNameIgnoringCase(emailAddress, userId, serviceName, options) {
 		const query = {
-			'emails.address': String(emailAddress).trim().toLowerCase(),
+			'emails.address': new RegExp(`^${escapeRegExp(String(emailAddress).trim())}$`, 'i'),
 			[`services.${serviceName}.id`]: userId,
 		};