From 3de26e9bf709f01879daefde0a6a9fac0179a02b Mon Sep 17 00:00:00 2001
From: Alejandro Romero <alromh87@gmail.com>
Date: Sat, 17 Oct 2020 17:39:03 +0000
Subject: [PATCH] Fix Prototype Pollution

---
 lib/index.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/index.ts b/lib/index.ts
index 864cbac2..e67144ab 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -135,6 +135,10 @@ class Y18N {
   }
 
   updateLocale (obj: Locale) {
+    if ('__proto__' === this.locale){
+      throw new Error('Prototype pollution attempt detected');
+    }
+
     if (!this.cache[this.locale]) this._readLocaleFile()
 
     for (const key in obj) {