Description: Fix prototype Pollution vulnerability
Author: Michał Gołębiowski-Owczarek <https://github.com/mgol>
Origin: upstream, https://github.com/jquery/jquery/commit/753d591aea698e57d6db58c9f722cd0808619b1b
Bug: https://github.com/jquery/jquery/pull/4333
Bug-Debian: https://bugs.debian.org/927385
Forwarded: not-needed
Reviewed-By: Xavier Guimard <yadd@debian.org>
Last-Update: 2019-04-23

--- a/src/core.js
+++ b/src/core.js
@@ -157,7 +157,7 @@
 				copy = options[ name ];
 
 				// Prevent never-ending loop
-				if ( target === copy ) {
+				if ( name === "__proto__" || target === copy ) {
 					continue;
 				}