diff --git a/src/crawlee/_utils/sitemap.py b/src/crawlee/_utils/sitemap.py
index d110f0225c..74469f67cb 100644
--- a/src/crawlee/_utils/sitemap.py
+++ b/src/crawlee/_utils/sitemap.py
@@ -234,10 +234,10 @@ def _get_parser(content_type: str = '', url: str | None = None) -> _XmlSitemapPa
 
 def _get_origin_url(source: SitemapSource) -> str:
     """Determine the origin URL for a sitemap source."""
-    if source['type'] == 'url' and 'url' in source:
-        return source['url']
+    if url := source.get('url'):
+        return url
     if source['type'] == 'raw' and 'content' in source:
-        # For raw content sources, create a consistent identifier
+        # Raw sources without a known URL get a consistent content-derived identifier.
         return f'raw://{sha256(source["content"].encode()).hexdigest()}'
     return ''
 
@@ -496,8 +496,26 @@ async def load(
         )
 
     @classmethod
-    async def from_xml_string(cls, content: str) -> Sitemap:
-        return await cls.parse([SitemapSource(type='raw', content=content)])
+    async def from_xml_string(
+        cls,
+        content: str,
+        *,
+        sitemap_url: str | None = None,
+        parse_sitemap_options: ParseSitemapOptions | None = None,
+    ) -> Sitemap:
+        """Parse a sitemap from a raw XML string.
+
+        Args:
+            content: The sitemap XML content.
+            sitemap_url: URL the content was retrieved from. Providing it enables the same URL filtering as for
+                URL-loaded sitemaps: entries are kept only if they match the enqueue strategy (`same-hostname` by
+                default) relative to this URL. Without it, no filtering is applied.
+            parse_sitemap_options: Options for parsing, see `ParseSitemapOptions`.
+        """
+        source = SitemapSource(type='raw', content=content)
+        if sitemap_url is not None:
+            source['url'] = sitemap_url
+        return await cls.parse([source], parse_sitemap_options=parse_sitemap_options)
 
     @classmethod
     async def parse(
diff --git a/tests/unit/_utils/test_sitemap.py b/tests/unit/_utils/test_sitemap.py
index e1030844ab..ffe38efadb 100644
--- a/tests/unit/_utils/test_sitemap.py
+++ b/tests/unit/_utils/test_sitemap.py
@@ -321,6 +321,66 @@ async def test_sitemap_from_string() -> None:
     assert set(sitemap.urls) == get_basic_results()
 
 
+async def test_sitemap_from_string_keeps_cross_host_without_sitemap_url() -> None:
+    """Without `sitemap_url` there is no origin to filter against, so all URLs are kept."""
+    sitemap = await Sitemap.from_xml_string(get_basic_sitemap(url='https://other.com/'))
+
+    assert set(sitemap.urls) == get_basic_results('https://other.com/')
+
+
+async def test_sitemap_from_string_keeps_same_host_with_sitemap_url() -> None:
+    """URLs on the sitemap's own host survive the default `same-hostname` filter."""
+    sitemap = await Sitemap.from_xml_string(
+        get_basic_sitemap(),
+        sitemap_url=f'{DEFAULT_URL}sitemap.xml',
+    )
+
+    assert set(sitemap.urls) == get_basic_results()
+
+
+async def test_sitemap_from_string_filters_cross_host_with_sitemap_url() -> None:
+    """`from_xml_string` opts into host filtering when `sitemap_url` is given."""
+    sitemap = await Sitemap.from_xml_string(
+        get_basic_sitemap(url='https://other.com/'),
+        sitemap_url=f'{DEFAULT_URL}sitemap.xml',
+    )
+
+    assert sitemap.urls == []
+
+
+async def test_sitemap_from_string_allows_cross_host_with_strategy_all() -> None:
+    """`enqueue_strategy='all'` disables host filtering for raw string sitemaps too."""
+    sitemap = await Sitemap.from_xml_string(
+        get_basic_sitemap(url='https://other.com/'),
+        sitemap_url=f'{DEFAULT_URL}sitemap.xml',
+        parse_sitemap_options={'enqueue_strategy': 'all'},
+    )
+
+    assert set(sitemap.urls) == get_basic_results('https://other.com/')
+
+
+async def test_raw_source_with_url_uses_it_as_origin() -> None:
+    """A raw source with a known URL reports it as `origin_sitemap_url` instead of a `raw://` identifier."""
+    sitemap_url = f'{DEFAULT_URL}sitemap.xml'
+    items = [
+        item async for item in parse_sitemap([{'type': 'raw', 'content': get_basic_sitemap(), 'url': sitemap_url}])
+    ]
+
+    assert len(items) == 5
+    assert all(item.origin_sitemap_url == sitemap_url for item in items)
+
+
+async def test_raw_source_without_url_uses_content_hash_as_origin() -> None:
+    """A raw source without a URL reports a consistent content-derived `raw://` identifier as `origin_sitemap_url`."""
+    items = [item async for item in parse_sitemap([{'type': 'raw', 'content': get_basic_sitemap()}])]
+
+    assert len(items) == 5
+    origin = items[0].origin_sitemap_url
+    assert origin is not None
+    assert origin.startswith('raw://')
+    assert all(item.origin_sitemap_url == origin for item in items)
+
+
 async def test_malformed_sitemap_keeps_urls() -> None:
     """A parse error must not discard the URLs collected before it."""
     malformed = (