diff --git a/CVE-2023-43804.patch b/CVE-2023-43804.patch
new file mode 100644
index 0000000..1465292
--- /dev/null
+++ b/CVE-2023-43804.patch
@@ -0,0 +1,39 @@
+From 4405b8f6ef86daadfe2f4070f9e239d41fbe25df Mon Sep 17 00:00:00 2001
+From: Lumir Balhar <lbalhar@redhat.com>
+Date: Fri, 13 Oct 2023 11:11:24 +0200
+Subject: [PATCH] CVE-2023-43804
+
+---
+ src/urllib3/util/retry.py | 2 +-
+ test/test_retry.py        | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/urllib3/util/retry.py b/src/urllib3/util/retry.py
+index ee30c91..20b7f69 100644
+--- a/src/urllib3/util/retry.py
++++ b/src/urllib3/util/retry.py
+@@ -154,7 +154,7 @@ class Retry(object):
+ 
+     RETRY_AFTER_STATUS_CODES = frozenset([413, 429, 503])
+ 
+-    DEFAULT_REDIRECT_HEADERS_BLACKLIST = frozenset(["Authorization"])
++    DEFAULT_REDIRECT_HEADERS_BLACKLIST = frozenset(["Cookie", "Authorization"])
+ 
+     #: Maximum backoff time.
+     BACKOFF_MAX = 120
+diff --git a/test/test_retry.py b/test/test_retry.py
+index c36476f..110688d 100644
+--- a/test/test_retry.py
++++ b/test/test_retry.py
+@@ -270,7 +270,7 @@ class TestRetry(object):
+     def test_retry_default_remove_headers_on_redirect(self):
+         retry = Retry()
+ 
+-        assert list(retry.remove_headers_on_redirect) == ["authorization"]
++        assert retry.remove_headers_on_redirect == {"authorization", "cookie"}
+ 
+     def test_retry_set_remove_headers_on_redirect(self):
+         retry = Retry(remove_headers_on_redirect=["X-API-Secret"])
+-- 
+2.41.0
+
diff --git a/python-urllib3.spec b/python-urllib3.spec
index 113eaf3..208c9d6 100644
--- a/python-urllib3.spec
+++ b/python-urllib3.spec
@@ -6,7 +6,7 @@
 
 Name:           python-%{srcname}
 Version:        1.25.10
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Python HTTP library with thread-safe connection pooling and file post
 
 License:        MIT
@@ -18,6 +18,17 @@ Source1:        ssl_match_hostname_py3.py
 # Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=1968074
 # Upstream fix: https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec
 Patch0:         CVE-2021-33503.patch
+
+# CVE-2023-43804
+# Added the `Cookie` header to the list of headers to strip from
+# requests when redirecting to a different host. As before, different headers
+# can be set via `Retry.remove_headers_on_redirect`.
+# Tests backported only partially as we don't use the whole part of
+# testing with dummyserver.
+# Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=2242493
+# Upstream fix: https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
+Patch1: CVE-2023-43804.patch
+
 BuildArch:      noarch
 # Exclude i686 arch. Due to a modularity issue it's being added to the
 # x86_64 compose of CRB, but we don't want to ship it at all.
@@ -123,6 +134,10 @@ popd
 
 
 %changelog
+* Thu Oct 12 2023 Lumír Balhar <lbalhar@redhat.com> - 1.25.10-5
+- Security fix for CVE-2023-43804
+Resolves: RHEL-11997
+
 * Tue Jun 29 2021 Lumír Balhar <lbalhar@redhat.com> - 1.25.10-4
 - Fix for CVE-2021-33503 Catastrophic backtracking in URL authority parser
 Resolves: rhbz#1968074