diff --git a/python/tvm/relax/frontend/onnx/onnx_frontend.py b/python/tvm/relax/frontend/onnx/onnx_frontend.py
index 3d9dfba9a16b..5be4f0831d90 100644
--- a/python/tvm/relax/frontend/onnx/onnx_frontend.py
+++ b/python/tvm/relax/frontend/onnx/onnx_frontend.py
@@ -1905,7 +1905,7 @@ class CumSum(OnnxOpConverter):
     def _impl_v14(cls, bb, inputs, attr, params):
         data = inputs[0]
         axis_input = get_constant(inputs[1], params)
-        assert not attr.get("exclusive", False), "Exclusive option not yet supported."
+        exclusive = attr.get("exclusive", 0) != 0
 
         if isinstance(axis_input, relax.Constant):
             axis_data = axis_input.data.numpy()
@@ -1933,7 +1933,7 @@ def _impl_v14(cls, bb, inputs, attr, params):
         if attr.get("reverse", 0) != 0:
             data = bb.emit_te(topi.flip, data, axis=axis)
 
-        data = relax.op.cumsum(data, axis)
+        data = relax.op.cumsum(data, axis, exclusive=exclusive)
         data = bb.normalize(data)
 
         if attr.get("reverse", 0) != 0:
diff --git a/tests/python/relax/test_frontend_onnx.py b/tests/python/relax/test_frontend_onnx.py
index 8d8c1bc54b9b..0db3739daa85 100644
--- a/tests/python/relax/test_frontend_onnx.py
+++ b/tests/python/relax/test_frontend_onnx.py
@@ -2001,7 +2001,7 @@ def test_pow():
 
 
 @pytest.mark.parametrize("reverse", [True, False])
-@pytest.mark.parametrize("exclusive", [False])
+@pytest.mark.parametrize("exclusive", [True, False])
 def test_cumsum(reverse, exclusive):
     cumsum_node = helper.make_node(
         "CumSum", ["x", "axis"], ["y"], reverse=reverse, exclusive=exclusive