diff --git a/packages/vitest/package.json b/packages/vitest/package.json
index c41c7faa182c..7dae5cc2374c 100644
--- a/packages/vitest/package.json
+++ b/packages/vitest/package.json
@@ -159,7 +159,7 @@
     "std-env": "^3.5.0",
     "strip-literal": "^2.0.0",
     "tinybench": "^2.5.1",
-    "tinypool": "^0.8.2",
+    "tinypool": "^0.8.3",
     "vite": "^5.0.0",
     "vite-node": "workspace:*",
     "why-is-node-running": "^2.2.2"
diff --git a/packages/vitest/src/runtime/workers/utils.ts b/packages/vitest/src/runtime/workers/utils.ts
index 9ffbf2b4983d..bef492bdbc54 100644
--- a/packages/vitest/src/runtime/workers/utils.ts
+++ b/packages/vitest/src/runtime/workers/utils.ts
@@ -6,6 +6,10 @@ import type { WorkerRpcOptions } from './types'
 
 const REGEXP_WRAP_PREFIX = '$$vitest:'
 
+// Store global APIs in case process is overwritten by tests
+const processSend = process.send?.bind(process)
+const processOn = process.on?.bind(process)
+
 export function createThreadsRpcOptions({ port }: WorkerContext): WorkerRpcOptions {
   return {
     post: (v) => { port.postMessage(v) },
@@ -17,9 +21,9 @@ export function createForksRpcOptions(nodeV8: typeof import('v8')): WorkerRpcOpt
   return {
     serialize: nodeV8.serialize,
     deserialize: v => nodeV8.deserialize(Buffer.from(v)),
-    post(v) { process.send!(v) },
+    post(v) { processSend!(v) },
     on(fn) {
-      process.on('message', (message: any, ...extras: any) => {
+      processOn('message', (message: any, ...extras: any) => {
         // Do not react on Tinypool's internal messaging
         if ((message as TinypoolWorkerMessage)?.__tinypool_worker_message__)
           return
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 1ee182d27ca4..7a9e86a5de95 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1373,8 +1373,8 @@ importers:
         specifier: ^2.5.1
         version: 2.5.1
       tinypool:
-        specifier: ^0.8.2
-        version: 0.8.2
+        specifier: ^0.8.3
+        version: 0.8.3
       vite:
         specifier: ^5.0.12
         version: 5.0.12(@types/node@20.11.5)(less@4.1.3)
@@ -25476,8 +25476,8 @@ packages:
       js-tokens: 8.0.2
     dev: true
 
-  /tinypool@0.8.2:
-    resolution: {integrity: sha512-SUszKYe5wgsxnNOVlBYO6IC+8VGWdVGZWAqUxp3UErNBtptZvWbwyUOyzNL59zigz2rCA92QiL3wvG+JDSdJdQ==}
+  /tinypool@0.8.3:
+    resolution: {integrity: sha512-Ud7uepAklqRH1bvwy22ynrliC7Dljz7Tm8M/0RBUW+YRa4YHhZ6e4PpgE+fu1zr/WqB1kbeuVrdfeuyIBpy4tw==}
     engines: {node: '>=14.0.0'}
     dev: false
 
diff --git a/test/core/test/mocked-process.test.ts b/test/core/test/mocked-process.test.ts
new file mode 100644
index 000000000000..380a8ad72a37
--- /dev/null
+++ b/test/core/test/mocked-process.test.ts
@@ -0,0 +1,7 @@
+import { expect, it, vi } from 'vitest'
+
+vi.stubGlobal('process', { badMock: true })
+
+it('should not hang', () => {
+  expect(1).toBe(1)
+})
diff --git a/test/coverage-test/test/coverage.test.ts b/test/coverage-test/test/coverage.test.ts
index 5d1d1b72e894..5bb78b2ded4b 100644
--- a/test/coverage-test/test/coverage.test.ts
+++ b/test/coverage-test/test/coverage.test.ts
@@ -14,7 +14,8 @@ import virtualFile2 from '\0vitest-custom-virtual-file-2'
 
 // Browser mode crashes with dynamic files. Enable this when browser mode works.
 // To keep istanbul report consistent between browser and node, skip dynamic tests when istanbul is used.
-const skipDynamicFiles = '__vitest_browser__' in globalThis || globalThis.process?.env.COVERAGE_PROVIDER === 'istanbul' || !globalThis.process?.env.COVERAGE_PROVIDER
+const provider = globalThis.process?.env.COVERAGE_PROVIDER
+const skipDynamicFiles = '__vitest_browser__' in globalThis || provider === 'istanbul' || !provider
 
 const { pythagoras } = await (() => {
   if ('__vitest_browser__' in globalThis)
@@ -78,7 +79,7 @@ test('decorators', () => {
 })
 
 // Istanbul fails to follow source maps on windows
-test.skipIf(globalThis.process?.env.COVERAGE_PROVIDER === 'istanbul')('pre-transpiled code with source maps to original', async () => {
+test.runIf(provider === 'v8' || provider === 'custom')('pre-transpiled code with source maps to original', async () => {
   const transpiled = await import('../src/transpiled.js')
 
   transpiled.hello()