diff --git a/scrapy/spiders/sitemap.py b/scrapy/spiders/sitemap.py
index 2a80b8d24..0f2a2edb3 100644
--- a/scrapy/spiders/sitemap.py
+++ b/scrapy/spiders/sitemap.py
@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import logging
 import re
+from urllib.parse import urlparse
 
 # Iterable is needed at the run time for the SitemapSpider._parse_sitemap() annotation
 from collections.abc import AsyncIterator, Iterable, Sequence  # noqa: TC003
@@ -145,7 +146,10 @@ class SitemapSpider(Spider):
         # without actually being a .xml.gz file in the first place,
         # merely XML gzip-compressed on the fly,
         # in other word, here, we have plain XML
-        if response.url.endswith(".xml") or response.url.endswith(".xml.gz"):
+        # Check the URL path only, so sitemaps served with a query string
+        # (e.g. ".../sitemap_products_8.xml?from=1&to=2") are not ignored.
+        url_path = urlparse(response.url).path
+        if url_path.endswith(".xml") or url_path.endswith(".xml.gz"):
             return response.body
         return None
 
diff --git a/tests/test_spider_sitemap.py b/tests/test_spider_sitemap.py
index 0af99ab6d..03d83734a 100644
--- a/tests/test_spider_sitemap.py
+++ b/tests/test_spider_sitemap.py
@@ -59,6 +59,14 @@ class TestSitemapSpider(TestSpider):
         r = TextResponse(url="http://www.example.com/sitemap.xml", body=self.BODY)
         self.assertSitemapBody(r, self.BODY)
 
+    def test_get_sitemap_body_xml_url_with_query_string(self):
+        # Sitemaps served with a query string must not be ignored (#6293).
+        r = TextResponse(
+            url="http://www.example.com/sitemap_products_8.xml?from=1&to=2",
+            body=self.BODY,
+        )
+        self.assertSitemapBody(r, self.BODY)
+
     def test_get_sitemap_body_xml_url_compressed(self):
         r = Response(
             url="http://www.example.com/sitemap.xml.gz",