# Vitest v4.1.8 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v4.1.8
- **Released:** Jun 01, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v4.1.8/

## Executive Summary (TL;DR)
Vitest v4.1.8. Source highlight:    🐞 Bug Fixes

## Bug Fixes
- Disable client `cdp` API when `allowWrite/allowExec: false` [backport to v4] &nbsp;-&nbsp; by @hi-ogawa and **Codex** in https://github.com/vitest-dev/vitest/issues/10450 <samp>(e4067)</samp>
- Remove orphaned Playwright route when same module is mocked via multiple ids [backport to v4] &nbsp;-&nbsp; by @toxik and @Zelys-DFKH in https://github.com/vitest-dev/vitest/issues/10474 <samp>(675b4)</samp>