Missing Origin Validation in WebSockets in vitest - CVE-2025-24964
Published: August 22, 2025
Vulnerability identifier: #VU114354
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-24964
CWE-ID: CWE-1385
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Vitest
Affected software:
vitest
vitest
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to WebSocket server does not check Origin header and did not have any authorization mechanism and was vulnerable to CSWSH attacks. This WebSocket server has `saveTestFile` API that can edit a test file and `rerun` API that can rerun the tests. . A remote attacker can execute arbitrary code by injecting a code in a test file by the `saveTestFile` API and then running that file by calling the `rerun` API. This vulnerability can result in remote code execution for users that are using Vitest serve API.
How to mitigate CVE-2025-24964
Install updates from vendor's website.
Sources
- https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L32-L46
- https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L66-L76
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-9crc-q9x8-hgqq
- https://vitest.dev/config/#api