diff --git a/src/backend/langflow/graph/graph/base.py b/src/backend/langflow/graph/graph/base.py
index f0d3986cf..2b22d352c 100644
--- a/src/backend/langflow/graph/graph/base.py
+++ b/src/backend/langflow/graph/graph/base.py
@@ -144,7 +144,7 @@ class Graph:
 
         return list(reversed(sorted_vertices))
 
-    def generator_build(self) -> Generator:
+    def generator_build(self) -> Generator[Vertex, None, None]:
         """Builds each vertex in the graph and yields it."""
         sorted_vertices = self.topological_sort()
         logger.debug("Sorted vertices: %s", sorted_vertices)
diff --git a/src/backend/langflow/graph/vertex/base.py b/src/backend/langflow/graph/vertex/base.py
index 425f66315..ade10365b 100644
--- a/src/backend/langflow/graph/vertex/base.py
+++ b/src/backend/langflow/graph/vertex/base.py
@@ -133,13 +133,13 @@ class Vertex:
         # Add _type to params
         self.params = params
 
-    def _build(self):
+    def _build(self, user_id=None):
         """
         Initiate the build process.
         """
         logger.debug(f"Building {self.vertex_type}")
-        self._build_each_node_in_params_dict()
-        self._get_and_instantiate_class()
+        self._build_each_node_in_params_dict(user_id)
+        self._get_and_instantiate_class(user_id)
         self._validate_built_object()
 
         self._built = True
@@ -169,23 +169,25 @@ class Vertex:
         """
         return all(self._is_node(node) for node in value)
 
-    def _build_node_and_update_params(self, key, node):
+    def _build_node_and_update_params(self, key, node, user_id=None):
         """
         Builds a given node and updates the params dictionary accordingly.
         """
-        result = node.build()
+        result = node.build(user_id)
         self._handle_func(key, result)
         if isinstance(result, list):
             self._extend_params_list_with_result(key, result)
         self.params[key] = result
 
-    def _build_list_of_nodes_and_update_params(self, key, nodes):
+    def _build_list_of_nodes_and_update_params(
+        self, key, nodes: List["Vertex"], user_id=None
+    ):
         """
         Iterates over a list of nodes, builds each and updates the params dictionary.
         """
         self.params[key] = []
         for node in nodes:
-            built = node.build()
+            built = node.build(user_id)
             if isinstance(built, list):
                 if key not in self.params:
                     self.params[key] = []
@@ -215,7 +217,7 @@ class Vertex:
         if isinstance(self.params[key], list):
             self.params[key].extend(result)
 
-    def _get_and_instantiate_class(self):
+    def _get_and_instantiate_class(self, user_id=None):
         """
         Gets the class from a dictionary and instantiates it with the params.
         """
@@ -226,6 +228,7 @@ class Vertex:
                 node_type=self.vertex_type,
                 base_type=self.base_type,
                 params=self.params,
+                user_id=user_id,
             )
             self._update_built_object_and_artifacts(result)
         except Exception as exc:
@@ -255,9 +258,9 @@ class Vertex:
 
             raise ValueError(message)
 
-    def build(self, force: bool = False) -> Any:
+    def build(self, force: bool = False, user_id=None) -> Any:
         if not self._built or force:
-            self._build()
+            self._build(user_id)
 
         return self._built_object
 
diff --git a/src/backend/langflow/interface/custom/custom_component.py b/src/backend/langflow/interface/custom/custom_component.py
index 88d2bcc82..1357daf68 100644
--- a/src/backend/langflow/interface/custom/custom_component.py
+++ b/src/backend/langflow/interface/custom/custom_component.py
@@ -1,4 +1,5 @@
-from typing import Any, Callable, List, Optional
+from typing import Any, Callable, List, Optional, Union
+from uuid import UUID
 from fastapi import HTTPException
 from langflow.interface.custom.constants import CUSTOM_COMPONENT_SUPPORTED_TYPES
 from langflow.interface.custom.component import Component
@@ -22,6 +23,7 @@ class CustomComponent(Component, extra=Extra.allow):
     function: Optional[Callable] = None
     return_type_valid_list = list(CUSTOM_COMPONENT_SUPPORTED_TYPES.keys())
     repr_value: Optional[Any] = ""
+    user_id: Optional[Union[UUID, str]] = None
 
     def __init__(self, **data):
         super().__init__(**data)
@@ -187,11 +189,16 @@ class CustomComponent(Component, extra=Extra.allow):
         return build_sorted_vertices_with_caching(graph_data)
 
     def list_flows(self, *, get_session: Optional[Callable] = None) -> List[Flow]:
-        get_session = get_session or session_getter
-        db_manager = get_db_manager()
-        with get_session(db_manager) as session:
-            flows = session.query(Flow).all()
-        return flows
+        if not self.user_id:
+            raise ValueError("Session is invalid")
+        try:
+            get_session = get_session or session_getter
+            db_manager = get_db_manager()
+            with get_session(db_manager) as session:
+                flows = session.query(Flow).filter(Flow.user_id == self.user_id).all()
+            return flows
+        except Exception as e:
+            raise ValueError("Session is invalid") from e
 
     def get_flow(
         self,
@@ -207,7 +214,11 @@ class CustomComponent(Component, extra=Extra.allow):
             if flow_id:
                 flow = session.query(Flow).get(flow_id)
             elif flow_name:
-                flow = session.query(Flow).filter(Flow.name == flow_name).first()
+                flow = (
+                    session.query(Flow)
+                    .filter(Flow.name == flow_name)
+                    .filter(Flow.user_id == self.user_id)
+                ).first()
             else:
                 raise ValueError("Either flow_name or flow_id must be provided")
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 9abe89d49..1359664a0 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -170,7 +170,7 @@ def test_user(client):
 
 
 @pytest.fixture(scope="function")
-def active_user(session):
+def active_user(client, session):
     user = User(
         username="activeuser",
         password=get_password_hash(