diff --git a/.changeset/rich-maps-invite.md b/.changeset/rich-maps-invite.md
new file mode 100644
index 0000000000..927d8e9382
--- /dev/null
+++ b/.changeset/rich-maps-invite.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-permission-node': patch
+---
+
+The `createPermissionIntegrationRouter` function now detects and prevents the exposure of duplicate permissions.
diff --git a/.changeset/twenty-monkeys-applaud.md b/.changeset/twenty-monkeys-applaud.md
new file mode 100644
index 0000000000..a1b0c1d338
--- /dev/null
+++ b/.changeset/twenty-monkeys-applaud.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': patch
+---
+
+Resolved an issue where the `templateManagementPermission` was not being exposed through the `/permissions/metadata` endpoint.
diff --git a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.test.ts b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.test.ts
index 24e1b91065..a38059e547 100644
--- a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.test.ts
+++ b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.test.ts
@@ -904,7 +904,7 @@ describe('createPermissionIntegrationRouter', () => {
     const response = await request(
       express().use(
         createPermissionIntegrationRouter({
-          permissions: [aPermission],
+          permissions: [aPermission, testPermission],
           resources: [
             {
               resourceType: 'test-resource',
diff --git a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
index 40d215d515..5210e6fb1c 100644
--- a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
+++ b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
@@ -328,11 +328,16 @@ export function createPermissionIntegrationRouter<
         >
       ).rules || [],
   );
-  const allPermissions = [
-    ...((options as { permissions: Permission[] }).permissions || []),
-    ...(optionsWithResources.resources?.flatMap(o => o.permissions || []) ||
-      []),
-  ];
+
+  const allPermissions = Array.from(
+    new Map(
+      [
+        ...((options as { permissions: Permission[] }).permissions || []),
+        ...(optionsWithResources.resources?.flatMap(o => o.permissions || []) ||
+          []),
+      ].map(i => [i.name, i]),
+    ).values(),
+  );
 
   const allResourceTypes = allOptions.reduce((acc, option) => {
     if (
diff --git a/plugins/scaffolder-backend/src/service/router.ts b/plugins/scaffolder-backend/src/service/router.ts
index d8888058e8..1758eb3fba 100644
--- a/plugins/scaffolder-backend/src/service/router.ts
+++ b/plugins/scaffolder-backend/src/service/router.ts
@@ -41,7 +41,7 @@ import {
   RESOURCE_TYPE_SCAFFOLDER_ACTION,
   RESOURCE_TYPE_SCAFFOLDER_TEMPLATE,
   scaffolderActionPermissions,
-  scaffolderTaskPermissions,
+  scaffolderPermissions,
   scaffolderTemplatePermissions,
   taskCancelPermission,
   taskCreatePermission,
@@ -445,7 +445,7 @@ export async function createRouter(
         rules: actionRules,
       },
     ],
-    permissions: scaffolderTaskPermissions,
+    permissions: scaffolderPermissions,
   });
 
   router.use(permissionIntegrationRouter);