Missing Authorization Affecting @vitest/coverage-v8 package, versions >=3.0.0-beta.1 <3.2.5>=4.0.0-beta.1 <4.1.8>=5.0.0-beta.1 <5.0.0-beta.4
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-VITESTCOVERAGEV8-17375132
- published18 Jun 2026
- disclosed15 Jun 2026
- creditUnknown
Introduced: 15 Jun 2026
NewCVE-2026-53633 (opens in a new tab)How to fix?
Upgrade @vitest/coverage-v8 to version 3.2.5, 4.1.8, 5.0.0-beta.4 or higher.
Overview
@vitest/coverage-v8 is a V8 coverage provider for Vitest
Affected versions of this package are vulnerable to Missing Authorization in the cdp API exposed by the browser WebSocket RPC, which allows forwarding of raw Chrome DevTools Protocol methods without proper enforcement of write and exec restrictions. An attacker can execute arbitrary code on the host system by overwriting configuration files and triggering their execution through remote access to the API. This is only exploitable if the browser API server is exposed to the network and a CDP-capable provider is used, such as when the API is configured with --browser.api.host=0.0.0.0 and an active session exists.