From 5d5fa553119da2215e7016f2c22f122a9d7606c3 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Fri, 4 Nov 2022 13:47:53 -0400
Subject: [PATCH] Limit the amount of whitespace to search/backtrack. Fixes
 #3569.

---
 setuptools/package_index.py           | 2 +-
 setuptools/tests/test_packageindex.py | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/setuptools/package_index.py b/setuptools/package_index.py
index 5619e4da72c..362e26f3e1a 100644
--- a/setuptools/package_index.py
+++ b/setuptools/package_index.py
@@ -217,7 +217,7 @@ def wrapper(*args, **kwargs):
     return wrapper
 
 
-REL = re.compile(r"""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
+REL = re.compile(r"""<([^>]*\srel\s{0,10}=\s{0,10}['"]?([^'" >]+)[^>]*)>""", re.I)
 """
 Regex for an HTML tag with 'rel="val"' attributes.
 """
diff --git a/setuptools/tests/test_packageindex.py b/setuptools/tests/test_packageindex.py
index e58a8637d11..7b0bf1124dc 100644
--- a/setuptools/tests/test_packageindex.py
+++ b/setuptools/tests/test_packageindex.py
@@ -307,7 +307,6 @@ def test_percent_in_password(self, temp_home):
         assert cred.password == 'pity%'
 
 
-@pytest.mark.xfail(reason="#3569")
 @pytest.mark.timeout(1)
 def test_REL_DoS():
     """