CRITICAL

CVE-2026-53633

CVSS v3

9.8

CRITICAL

EPSS Score

0.9 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

@vitest/browsernpmfrom 3.0.0 · fixed in 3.2.5
vite-plusnpmall versions · fixed in 0.1.24

Vendor advisories

CVE-2026-53633 Red Hat Product Security
@vitest/browser: vite-plus: Vitest: Remote code execution via exposed Chrome DevTools Protocol API

Full record on NVD

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-07-14
Last Modified: 2026-07-16

Frequently asked questions

What is CVE-2026-53633?

Is CVE-2026-53633 actively exploited?

Active exploitation of CVE-2026-53633 has not been confirmed. Its EPSS score was 0.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-53633?

CVE-2026-53633 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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