diff --git a/packages/core/src/node/__tests__/open-in-editor.test.ts b/packages/core/src/node/__tests__/open-in-editor.test.ts
index cc6cda53..fc98405d 100644
--- a/packages/core/src/node/__tests__/open-in-editor.test.ts
+++ b/packages/core/src/node/__tests__/open-in-editor.test.ts
@@ -1,6 +1,7 @@
 import type { DevToolsNodeContext } from '@vitejs/devtools-kit'
 import { resolve } from 'node:path'
-import { describe, expect, it, vi } from 'vitest'
+import { launchEditor } from 'devframe/utils/launch-editor'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 import { openInEditor } from '../rpc/public/open-in-editor'
 
 // Mock launch-editor so tests don't actually open files
@@ -20,6 +21,10 @@ describe('openInEditor – path traversal protection', () => {
     return handler as (path: string) => Promise<void>
   }
 
+  beforeEach(() => {
+    vi.mocked(launchEditor).mockClear()
+  })
+
   it('allows opening a file inside the project root', async () => {
     const handler = await getHandler()
     await expect(handler('src/main.ts')).resolves.not.toThrow()
@@ -30,6 +35,18 @@ describe('openInEditor – path traversal protection', () => {
     await expect(handler('src/utils/helper.ts')).resolves.not.toThrow()
   })
 
+  it('resolves relative paths against cwd (Vite project root), not workspaceRoot', async () => {
+    const handler = await getHandler()
+    await handler('src/main.ts')
+    expect(launchEditor).toHaveBeenCalledWith(resolve(cwd, 'src/main.ts'))
+  })
+
+  it('allows jumping to sibling packages within the workspace root', async () => {
+    const handler = await getHandler()
+    await expect(handler('../sibling-pkg/src/foo.ts')).resolves.not.toThrow()
+    expect(launchEditor).toHaveBeenCalledWith(resolve(workspaceRoot, 'sibling-pkg/src/foo.ts'))
+  })
+
   it('rejects path traversal with ../', async () => {
     const handler = await getHandler()
     await expect(handler('../../etc/passwd')).rejects.toThrow(
@@ -46,7 +63,7 @@ describe('openInEditor – path traversal protection', () => {
 
   it('rejects traversal disguised within a subpath', async () => {
     const handler = await getHandler()
-    await expect(handler('src/../../secret/file.txt')).rejects.toThrow(
+    await expect(handler('src/../../../secret/file.txt')).rejects.toThrow(
       'Path is outside the workspace root',
     )
   })
diff --git a/packages/core/src/node/rpc/public/open-in-editor.ts b/packages/core/src/node/rpc/public/open-in-editor.ts
index d728f785..9ff73876 100644
--- a/packages/core/src/node/rpc/public/open-in-editor.ts
+++ b/packages/core/src/node/rpc/public/open-in-editor.ts
@@ -10,7 +10,7 @@ export const openInEditor = defineRpcFunction({
   setup: (context) => {
     return {
       handler: async (path: string) => {
-        const resolved = resolve(context.workspaceRoot, path)
+        const resolved = resolve(context.cwd, path)
         const rel = relative(context.workspaceRoot, resolved)
 
         // Prevent escaping the workspace root
diff --git a/packages/core/src/node/rpc/public/open-in-finder.ts b/packages/core/src/node/rpc/public/open-in-finder.ts
index 7ad4ce91..27651029 100644
--- a/packages/core/src/node/rpc/public/open-in-finder.ts
+++ b/packages/core/src/node/rpc/public/open-in-finder.ts
@@ -10,7 +10,7 @@ export const openInFinder = defineRpcFunction({
   setup: (context) => {
     return {
       handler: async (path: string) => {
-        const resolved = resolve(context.workspaceRoot, path)
+        const resolved = resolve(context.cwd, path)
         const rel = relative(context.workspaceRoot, resolved)
 
         // Ensure the path stays within workspace root