CVE-2026-53633

CRITICAL

Vitest Browser Mode - Remote Code Execution via Exposed CDP API

Title source: manual
STIX 2.1

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.

References (10)

Core 10
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/pull/10444
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/pull/10450
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/pull/10456

Scores

CVSS v3 9.8
EPSS 0.0058
EPSS Percentile 44.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-749 CWE-862
Status published
Products (3)
vitest-dev/vitest >= 3.0.0, < 3.2.5
vitest-dev/vitest >= 4.0.0, < 4.1.8
vitest-dev/vitest >= 5.0.0-beta.0, < 5.0.0-beta.4
Published Jul 14, 2026
Tracked Since Jul 15, 2026