diff --git a/packages/@n8n/permissions/src/roles/scopes/global-scopes.ee.ts b/packages/@n8n/permissions/src/roles/scopes/global-scopes.ee.ts
index 5c167bbf0e..e5f367a72c 100644
--- a/packages/@n8n/permissions/src/roles/scopes/global-scopes.ee.ts
+++ b/packages/@n8n/permissions/src/roles/scopes/global-scopes.ee.ts
@@ -78,6 +78,11 @@ export const GLOBAL_OWNER_SCOPES: Scope[] = [
 	'project:delete',
 	'insights:list',
 	'folder:move',
+	'folder:read',
+	'folder:update',
+	'folder:delete',
+	'folder:create',
+	'folder:list',
 	'oidc:manage',
 	'dataStore:list',
 	'role:manage',
diff --git a/packages/cli/src/controllers/folder.controller.ts b/packages/cli/src/controllers/folder.controller.ts
index 51746e52d3..3137d6f33a 100644
--- a/packages/cli/src/controllers/folder.controller.ts
+++ b/packages/cli/src/controllers/folder.controller.ts
@@ -18,8 +18,9 @@ import {
 	Put,
 	Param,
 	Licensed,
+	Middleware,
 } from '@n8n/decorators';
-import { Response } from 'express';
+import { NextFunction, Response } from 'express';
 import { UserError } from 'n8n-workflow';
 
 import { FolderNotFoundError } from '@/errors/folder-not-found.error';
@@ -28,14 +29,32 @@ import { InternalServerError } from '@/errors/response-errors/internal-server.er
 import { NotFoundError } from '@/errors/response-errors/not-found.error';
 import { FolderService } from '@/services/folder.service';
 import { EnterpriseWorkflowService } from '@/workflows/workflow.service.ee';
+import { ProjectService } from '@/services/project.service.ee';
 
 @RestController('/projects/:projectId/folders')
 export class ProjectController {
 	constructor(
 		private readonly folderService: FolderService,
 		private readonly enterpriseWorkflowService: EnterpriseWorkflowService,
+		private readonly projectService: ProjectService,
 	) {}
 
+	@Middleware()
+	async validateProjectExists(
+		req: AuthenticatedRequest<{ projectId: string }>,
+		res: Response,
+		next: NextFunction,
+	) {
+		try {
+			const { projectId } = req.params;
+			await this.projectService.getProject(projectId);
+			next();
+		} catch (e) {
+			res.status(404).send('Project not found');
+			return;
+		}
+	}
+
 	@Post('/')
 	@ProjectScope('folder:create')
 	@Licensed('feat:folders')
@@ -44,8 +63,10 @@ export class ProjectController {
 		_res: Response,
 		@Body payload: CreateFolderDto,
 	) {
+		const { projectId } = req.params;
+
 		try {
-			const folder = await this.folderService.createFolder(payload, req.params.projectId);
+			const folder = await this.folderService.createFolder(payload, projectId);
 			return folder;
 		} catch (e) {
 			if (e instanceof FolderNotFoundError) {
diff --git a/packages/cli/test/integration/folder/folder.controller.test.ts b/packages/cli/test/integration/folder/folder.controller.test.ts
index 29dd4759ce..100bfd0923 100644
--- a/packages/cli/test/integration/folder/folder.controller.test.ts
+++ b/packages/cli/test/integration/folder/folder.controller.test.ts
@@ -87,7 +87,7 @@ describe('POST /projects/:projectId/folders', () => {
 			name: 'Test Folder',
 		};
 
-		await authOwnerAgent.post('/projects/non-existing-id/folders').send(payload).expect(403);
+		await authOwnerAgent.post('/projects/non-existing-id/folders').send(payload).expect(404);
 	});
 
 	test('should not create folder when name is empty', async () => {
@@ -278,7 +278,7 @@ describe('GET /projects/:projectId/folders/:folderId/tree', () => {
 	});
 
 	test('should not get folder tree when project does not exist', async () => {
-		await authOwnerAgent.get('/projects/non-existing-id/folders/some-folder-id/tree').expect(403);
+		await authOwnerAgent.get('/projects/non-existing-id/folders/some-folder-id/tree').expect(404);
 	});
 
 	test('should not get folder tree when folder does not exist', async () => {
@@ -418,7 +418,7 @@ describe('GET /projects/:projectId/folders/:folderId/credentials', () => {
 	test('should not get folder credentials when project does not exist', async () => {
 		await authOwnerAgent
 			.get('/projects/non-existing-id/folders/some-folder-id/credentials')
-			.expect(403);
+			.expect(404);
 	});
 
 	test('should not get folder credentials when folder does not exist', async () => {
@@ -545,7 +545,7 @@ describe('PATCH /projects/:projectId/folders/:folderId', () => {
 		await authOwnerAgent
 			.patch('/projects/non-existing-id/folders/some-folder-id')
 			.send(payload)
-			.expect(403);
+			.expect(404);
 	});
 
 	test('should not update folder when folder does not exist', async () => {
@@ -1005,7 +1005,7 @@ describe('DELETE /projects/:projectId/folders/:folderId', () => {
 		await authOwnerAgent
 			.delete('/projects/non-existing-id/folders/some-folder-id')
 			.send({})
-			.expect(403);
+			.expect(404);
 	});
 
 	test('should not delete folder when folder does not exist', async () => {
@@ -1303,7 +1303,7 @@ describe('GET /projects/:projectId/folders', () => {
 	});
 
 	test('should not list folders when project does not exist', async () => {
-		await authOwnerAgent.get('/projects/non-existing-id/folders').expect(403);
+		await authOwnerAgent.get('/projects/non-existing-id/folders').expect(404);
 	});
 
 	test('should not list folders if user has no access to project', async () => {
@@ -1731,7 +1731,7 @@ describe('GET /projects/:projectId/folders/content', () => {
 	test('should not list folders when project does not exist', async () => {
 		await authOwnerAgent
 			.get('/projects/non-existing-id/folders/no-existing-id/content')
-			.expect(403);
+			.expect(404);
 	});
 
 	test('should not return folder content if user has no access to project', async () => {
diff --git a/packages/cli/test/integration/project.api.test.ts b/packages/cli/test/integration/project.api.test.ts
index 5b4a08c6c8..5943813d5f 100644
--- a/packages/cli/test/integration/project.api.test.ts
+++ b/packages/cli/test/integration/project.api.test.ts
@@ -853,6 +853,30 @@ describe('GET /project/:projectId', () => {
 			role: 'project:admin',
 		});
 	});
+
+	test('should have correct folder scopes when, as an admin / owner, I fetch a project created by a different user', async () => {
+		const [ownerUser, testUser1] = await Promise.all([createOwner(), createUser()]);
+
+		const createdProject = await createTeamProject(undefined, testUser1);
+
+		const memberAgent = testServer.authAgentFor(ownerUser);
+
+		const resp = await memberAgent.get(`/projects/${createdProject.id}`);
+		expect(resp.status).toBe(200);
+
+		expect(resp.body.data.id).toBe(createdProject.id);
+		expect(resp.body.data.name).toBe(createdProject.name);
+
+		expect(resp.body.data.scopes).toEqual(
+			expect.arrayContaining([
+				'folder:read',
+				'folder:update',
+				'folder:delete',
+				'folder:create',
+				'folder:list',
+			]),
+		);
+	});
 });
 
 describe('DELETE /project/:projectId', () => {