diff --git a/lib/web/cookies/index.js b/lib/web/cookies/index.js
index a612ca86f73..ccfc65a7687 100644
--- a/lib/web/cookies/index.js
+++ b/lib/web/cookies/index.js
@@ -52,9 +52,14 @@ function getCookies (headers) {
   }
 
   for (const piece of cookie.split(';')) {
-    const [name, ...value] = piece.split('=')
-
-    out[name.trim()] = value.join('=')
+    // The name ends at the first '=', and the value keeps any later ones.
+    const index = piece.indexOf('=')
+
+    if (index === -1) {
+      out[piece.trim()] = ''
+    } else {
+      out[piece.slice(0, index).trim()] = piece.slice(index + 1)
+    }
   }
 
   return out