diff --git a/packages/reflex-components-plotly/news/6722.bugfix.md b/packages/reflex-components-plotly/news/6722.bugfix.md
new file mode 100644
index 00000000000..04f33c3b99c
--- /dev/null
+++ b/packages/reflex-components-plotly/news/6722.bugfix.md
@@ -0,0 +1 @@
+Fixed `rx.plotly` `on_hover`/`on_click`/`on_unhover` event data reporting the wrong z bounding box for 3D traces: `bbox.z0`/`bbox.z1` had been duplicating the y-extent instead of surfacing the real z-extent.
diff --git a/packages/reflex-components-plotly/src/reflex_components_plotly/plotly.py b/packages/reflex-components-plotly/src/reflex_components_plotly/plotly.py
index 7649f24790e..debb80ec596 100644
--- a/packages/reflex-components-plotly/src/reflex_components_plotly/plotly.py
+++ b/packages/reflex-components-plotly/src/reflex_components_plotly/plotly.py
@@ -214,8 +214,8 @@ def add_custom_code(self) -> list[str]:
             x1: point.bbox.x1,
             y0: point.bbox.y0,
             y1: point.bbox.y1,
-            z0: point.bbox.y0,
-            z1: point.bbox.y1,
+            z0: point.bbox.z0,
+            z1: point.bbox.z1,
         }) : undefined;
         return removeUndefined({
             x: point.x,
diff --git a/tests/units/components/graphing/test_plotly.py b/tests/units/components/graphing/test_plotly.py
index 85dcb2da646..f85dd1a42e6 100644
--- a/tests/units/components/graphing/test_plotly.py
+++ b/tests/units/components/graphing/test_plotly.py
@@ -75,3 +75,22 @@ def test_plotly_basic_locale_option_merges_into_config(plotly_fig: go.Figure):
     assert "locale" not in rendered.props
     assert "_rxGetPlotlyLocaleConfig" in str(config_var)
     assert "fr" in str(config_var)
+
+
+def test_plotly_extract_points_bbox_z_source(plotly_fig: go.Figure):
+    """Test that the point extractor reads the z-bbox from the z fields.
+
+    The generated ``extractPoints`` helper must source the ``z0``/``z1`` bounding
+    box members from ``point.bbox.z0``/``point.bbox.z1`` so 3D-plot event data
+    reports the real z-extent instead of duplicating the y-extent.
+
+    Args:
+        plotly_fig: The figure to display.
+    """
+    component = rx.plotly(data=plotly_fig)
+    custom_code = "\n".join(component.add_custom_code())
+
+    assert "z0: point.bbox.z0" in custom_code
+    assert "z1: point.bbox.z1" in custom_code
+    assert "z0: point.bbox.y0" not in custom_code
+    assert "z1: point.bbox.y1" not in custom_code