diff --git a/src/specify_cli/catalogs.py b/src/specify_cli/catalogs.py
index d14e8ec425..ec80141275 100644
--- a/src/specify_cli/catalogs.py
+++ b/src/specify_cli/catalogs.py
@@ -80,7 +80,7 @@ def _validate_catalog_url(cls, url: str) -> None:
             )
         # Check hostname, not netloc: netloc is truthy for host-less URLs like
         # "https://:8080" or "https://user@", so the host guarantee this error
-        # promises would not actually hold. hostname is None in those cases.
+        # promises would not actually hold. hostname is None in those cases (#3209).
         if not parsed.hostname:
             raise cls._error("Catalog URL must be a valid URL with a host.")
 
diff --git a/src/specify_cli/presets/__init__.py b/src/specify_cli/presets/__init__.py
index 354cc82399..cf89b788a1 100644
--- a/src/specify_cli/presets/__init__.py
+++ b/src/specify_cli/presets/__init__.py
@@ -1863,7 +1863,7 @@ def _validate_catalog_url(self, url: str) -> None:
             )
         # Check hostname, not netloc: netloc is truthy for host-less URLs like
         # "https://:8080" or "https://user@", so the host guarantee this error
-        # promises would not actually hold. hostname is None in those cases.
+        # promises would not actually hold. hostname is None in those cases (#3209).
         if not parsed.hostname:
             raise PresetValidationError(
                 "Catalog URL must be a valid URL with a host."
diff --git a/tests/integrations/test_integration_catalog.py b/tests/integrations/test_integration_catalog.py
index 6b6831e05c..274ec13155 100644
--- a/tests/integrations/test_integration_catalog.py
+++ b/tests/integrations/test_integration_catalog.py
@@ -70,16 +70,17 @@ def test_missing_host_rejected(self):
     @pytest.mark.parametrize(
         "url",
         [
-            "https://:8080",       # port only, no host
-            "https://:0",          # port only, no host
-            "https://user@",       # userinfo only, no host
-            "https://user:pw@",    # userinfo only, no host
+            "https://:8080",                # port only, no host
+            "https://:8080/catalog.json",   # port only, with path
+            "https://:0",                   # port only, no host
+            "https://user@",                # userinfo only, no host
+            "https://user:pass@",           # userinfo only, no host
         ],
     )
     def test_hostless_url_with_truthy_netloc_rejected(self, url):
         # These have a truthy netloc (":8080", "user@") but no actual host,
         # so a netloc-based check would wrongly accept them despite the
-        # "valid URL with a host" promise. hostname is None for all of them.
+        # "valid URL with a host" promise. hostname is None for all of them (#3209).
         with pytest.raises(IntegrationCatalogError, match="valid URL"):
             IntegrationCatalog._validate_catalog_url(url)
 
diff --git a/tests/test_presets.py b/tests/test_presets.py
index 58dcdc7119..ff3f3dffc9 100644
--- a/tests/test_presets.py
+++ b/tests/test_presets.py
@@ -1427,14 +1427,15 @@ def test_validate_catalog_url_localhost_http_allowed(self, project_dir):
     @pytest.mark.parametrize(
         "url",
         [
-            "https://:8080",       # port only, no host
-            "https://:0",          # port only, no host
-            "https://user@",       # userinfo only, no host
-            "https://user:pw@",    # userinfo only, no host
+            "https://:8080",                # port only, no host
+            "https://:8080/catalog.json",   # port only, with path
+            "https://:0",                   # port only, no host
+            "https://user@",                # userinfo only, no host
+            "https://user:pass@",           # userinfo only, no host
         ],
     )
     def test_validate_catalog_url_hostless_rejected(self, project_dir, url):
-        """Reject host-less URLs whose netloc is truthy but hostname is None.
+        """Reject host-less URLs whose netloc is truthy but hostname is None (#3209).
 
         ``urlparse('https://:8080').netloc`` is ``':8080'`` (truthy) but its
         ``hostname`` is ``None``, so a netloc-based check would accept a URL