CVE-2026-53633
Critical
Description
Vitest is a testing framework powered by Vite. From 3.0.0 until 3.2.5, 4.1.8, and 5.0.0-beta.4, Vitest Browser Mode exposed a cdp() API that forwarded raw Chrome DevTools Protocol methods without being gated by allowWrite or allowExec, allowing a remote client with exposed browser API metadata to use CDP Page.setDownloadBehavior and Runtime.evaluate to overwrite vite.config.ts and execute attacker-controlled Node.js code. This issue is fixed in versions 3.2.5, 4.1.8, and 5.0.0-beta.
SeverityCritical
CVSS9.8
Exploit probability—
Product@vitest/browser
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-749CWE-749CWE-862Missing authorization
How to fix
Update
- @vitest/browser5.0.0-beta.4, 4.1.8, 3.2.5 or later
- vite-plus0.1.24 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @vitest/browsernpm | 5.0.0-beta.0 ≤ v < 5.0.0-beta.4, 4.0.0 ≤ v < 4.1.8, 3.0.0 ≤ v < 3.2.5 | 5.0.0-beta.4, 4.1.8, 3.2.5 |
| vite-plusnpm | v < 0.1.24 | 0.1.24 |
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