diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py
index 973048814f1..c87c0690807 100644
--- a/litellm/litellm_core_utils/litellm_logging.py
+++ b/litellm/litellm_core_utils/litellm_logging.py
@@ -380,6 +380,7 @@ class Logging(LiteLLMLoggingBaseClass):
         self.standard_callback_dynamic_params: StandardCallbackDynamicParams = (
             self.initialize_standard_callback_dynamic_params(kwargs)
         )
+        self._init_kwargs = kwargs
 
         # Process dynamic callbacks (after standard_callback_dynamic_params is initialized,
         # so team-scoped credentials are available for callback initialization)
@@ -482,10 +483,12 @@ class Logging(LiteLLMLoggingBaseClass):
                 # pass only the relevant dynamic params as custom_logger_init_args.
                 _custom_logger_init_args: Optional[dict] = None
                 if callback == "datadog":
+                    # dd_* params are blocked from standard_callback_dynamic_params
+                    # (request-level security), but team callback_vars in kwargs
+                    # are admin-configured and trusted.
+                    _source = self._init_kwargs or {}
                     _custom_logger_init_args = {
-                        k: v
-                        for k, v in self.standard_callback_dynamic_params.items()
-                        if k.startswith("dd_")
+                        k: v for k, v in _source.items() if k.startswith("dd_")
                     }
 
                 callback_class = _init_custom_logger_compatible_class(
diff --git a/litellm/proxy/litellm_pre_call_utils.py b/litellm/proxy/litellm_pre_call_utils.py
index 8cb9a11ffee..767134ef8fa 100644
--- a/litellm/proxy/litellm_pre_call_utils.py
+++ b/litellm/proxy/litellm_pre_call_utils.py
@@ -504,10 +504,22 @@ def _get_dynamic_logging_metadata(
     # Key-based callbacks
     #########################################################################################
     if key_dynamic_logging_settings is not None:
+        from litellm.litellm_core_utils.initialize_dynamic_callback_params import (
+            _request_blocked_callback_params,
+        )
+
         for item in key_dynamic_logging_settings:
             callback = _get_validated_callback_metadata(item=item, source="key-level")
             if callback is None:
                 continue
+            # Strip params that could redirect traffic to attacker-controlled
+            # destinations (e.g. dd_site, dd_agent_host). Key metadata is
+            # user-configurable; only team-level callbacks are admin-trusted.
+            callback.callback_vars = {
+                k: v
+                for k, v in callback.callback_vars.items()
+                if k not in _request_blocked_callback_params
+            }
             callback_settings_obj = convert_key_logging_metadata_to_callback(
                 data=callback,
                 team_callback_settings_obj=callback_settings_obj,
diff --git a/tests/test_litellm/integrations/datadog/test_datadog_team_handler.py b/tests/test_litellm/integrations/datadog/test_datadog_team_handler.py
index 1ee497476d1..b70e8d6e129 100644
--- a/tests/test_litellm/integrations/datadog/test_datadog_team_handler.py
+++ b/tests/test_litellm/integrations/datadog/test_datadog_team_handler.py
@@ -192,3 +192,55 @@ class TestStandardCallbackDynamicParamsIncludesDatadog:
         assert "dd_site" in annotations
         assert "dd_agent_host" in annotations
         assert "dd_agent_port" in annotations
+
+
+class TestTeamCallbackFlowPassesDDCredentials:
+    """
+    Integration test for the full team callback flow.
+
+    Verifies that DD credentials configured via team callback_vars
+    actually reach DataDogHandler when a request is processed.
+    The dd_* params are in _request_blocked_callback_params (to prevent
+    request-level injection), but team callback_vars are admin-configured
+    and must pass through.
+    """
+
+    def test_process_dynamic_callbacks_passes_dd_params_from_kwargs(self):
+        """
+        Simulates the Logging.__init__ flow where team callback_vars
+        (dd_api_key, dd_site) are unpacked into kwargs. Verifies that
+        _process_dynamic_callback_list picks them up and passes them
+        to DataDogHandler despite _request_blocked_callback_params.
+        """
+        from litellm.litellm_core_utils.litellm_logging import Logging
+
+        kwargs = {
+            "dd_api_key": "team-dd-key-123",
+            "dd_site": "us5.datadoghq.com",
+            "model": "gpt-4",
+            "litellm_params": {"metadata": {}},
+        }
+
+        with patch("asyncio.create_task"):
+            logging_obj = Logging(
+                model="gpt-4",
+                messages=[{"role": "user", "content": "hi"}],
+                stream=False,
+                call_type="completion",
+                start_time="2026-01-01",
+                litellm_call_id="test-call-id",
+                function_id="test-func",
+                dynamic_success_callbacks=["datadog"],
+                kwargs=kwargs,
+            )
+
+        dd_loggers = [
+            cb
+            for cb in (logging_obj.dynamic_success_callbacks or [])
+            if isinstance(cb, DataDogLogger)
+        ]
+        assert (
+            len(dd_loggers) == 1
+        ), "DataDogLogger should be initialized from team callback_vars"
+        assert dd_loggers[0].DD_API_KEY == "team-dd-key-123"
+        assert "us5.datadoghq.com" in dd_loggers[0].intake_url