diff --git a/workflow/controller/inline_test.go b/workflow/controller/inline_test.go
new file mode 100644
index 000000000000..6147741ae855
--- /dev/null
+++ b/workflow/controller/inline_test.go
@@ -0,0 +1,41 @@
+package controller
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	wfv1 "github.com/argoproj/argo-workflows/v3/pkg/apis/workflow/v1alpha1"
+)
+
+func TestInlineDAG(t *testing.T) {
+	wf := wfv1.MustUnmarshalWorkflow(`
+apiVersion: argoproj.io/v1alpha1
+kind: Workflow
+metadata:
+  generateName: inline-
+spec:
+  entrypoint: main
+  templates:
+    - name: main
+      dag:
+        tasks:
+          - name: a
+            inline:
+              container:
+                image: argoproj/argosay:v2
+                args:
+                  - echo
+                  - "{{inputs.parameters.foo}}"
+              inputs:
+                parameters:
+                  - name: foo
+                    value: bar
+`)
+	cancel, wfc := newController(wf)
+	defer cancel()
+	woc := newWorkflowOperationCtx(wf, wfc)
+	woc.operate(context.Background())
+	assert.Equal(t, wfv1.WorkflowRunning, woc.wf.Status.Phase)
+}
diff --git a/workflow/validate/validate.go b/workflow/validate/validate.go
index 9c49cebe70e4..a8b3470107ef 100644
--- a/workflow/validate/validate.go
+++ b/workflow/validate/validate.go
@@ -1286,6 +1286,12 @@ func (ctx *templateValidationCtx) validateDAG(scope map[string]interface{}, tmpl
 			aggregate := len(ancestorTask.WithItems) > 0 || ancestorTask.WithParam != ""
 			ctx.addOutputsToScope(resolvedTmpl, ancestorPrefix, taskScope, aggregate, true)
 		}
+		if i := task.Inline; i != nil {
+			for _, p := range i.Inputs.Parameters {
+				taskScope["inputs.parameters."+p.Name] = placeholderGenerator.NextPlaceholder()
+			}
+		}
+
 		err = addItemsToScope(task.WithItems, task.WithParam, task.WithSequence, taskScope)
 		if err != nil {
 			return errors.Errorf(errors.CodeBadRequest, "templates.%s.tasks.%s %s", tmpl.Name, task.Name, err.Error())