From 40a7aa5079ec6df5a9f965c7a1a28821cce14973 Mon Sep 17 00:00:00 2001
From: V <vendicated@riseup.net>
Date: Sun, 9 Apr 2023 06:58:29 +0200
Subject: [PATCH] UserScript: Fix cors check

---
 browser/GMPolyfill.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/browser/GMPolyfill.js b/browser/GMPolyfill.js
index 6f05ca0bf..beee9156a 100644
--- a/browser/GMPolyfill.js
+++ b/browser/GMPolyfill.js
@@ -59,8 +59,8 @@ async function checkCors(url, method) {
     const origin = headers["access-control-allow-origin"];
     if (origin !== "*" && origin !== window.location.origin) return false;
 
-    const methods = headers["access-control-allow-methods"]?.split(/,\s/g);
-    if (methods && !methods.includes(method)) return false;
+    const methods = headers["access-control-allow-methods"]?.toLowerCase().split(/,\s/g);
+    if (methods && !methods.includes(method.toLowerCase())) return false;
 
     return true;
 }