From 9fa728f4e89d0d6882a76cb27902029d60455993 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sat, 11 Jul 2020 18:27:19 +0700
Subject: [PATCH] [wistia] Restrict embed regex (closes #25969)

---
 youtube_dl/extractor/wistia.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/wistia.py b/youtube_dl/extractor/wistia.py
index 168e5e901..77febd2eb 100644
--- a/youtube_dl/extractor/wistia.py
+++ b/youtube_dl/extractor/wistia.py
@@ -56,7 +56,7 @@ def _extract_urls(webpage):
             urls.append(unescapeHTML(match.group('url')))
         for match in re.finditer(
                 r'''(?sx)
-                    <div[^>]+class=(["']).*?\bwistia_async_(?P<id>[a-z0-9]{10})\b.*?\2
+                    <div[^>]+class=(["'])(?:(?!\1).)*?\bwistia_async_(?P<id>[a-z0-9]{10})\b(?:(?!\1).)*?\1
                 ''', webpage):
             urls.append('wistia:%s' % match.group('id'))
         for match in re.finditer(r'(?:data-wistia-?id=["\']|Wistia\.embed\(["\']|id=["\']wistia_)(?P<id>[a-z0-9]{10})', webpage):