From 5a7c5b8410e426ac6412bfaaae513174df3fea57 Mon Sep 17 00:00:00 2001
From: Matthias Kunnen <matthias.kunnen@gmail.com>
Date: Tue, 21 Jul 2020 03:29:04 +0000
Subject: [PATCH] Fix prototype pollution on unflatten

Fixes #105.
---
 index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/index.js b/index.js
index ca8904a..31afb76 100644
--- a/index.js
+++ b/index.js
@@ -77,6 +77,9 @@ function unflatten (target, opts) {
     var recipient = result
 
     while (key2 !== undefined) {
+      if (key1 === '__proto__') {
+        return
+      }
       var type = Object.prototype.toString.call(recipient[key1])
       var isobject = (
         type === '[object Object]' ||