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chore(deps): update dependency vitest [security] - #873

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chore(deps): update dependency vitest [security]#873
renovate[bot] wants to merge 2 commits into
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renovate/npm-vitest-vulnerability

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@renovate renovate Bot commented Aug 26, 2026

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ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package Change Age Confidence
vitest (source) ^4.0.18 → ^4.1.11 age confidence
vitest (source) 4.0.18 → 4.1.0 age confidence

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.

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

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
    View changes on GitHub

v4.1.10

Compare Source

   🐞 Bug Fixes
    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
    View changes on GitHub

v4.1.7

Compare Source

   🐞 Bug Fixes
    View changes on GitHub

v4.1.6

Compare Source

   🐞 Bug Fixes
   🏎 Performance
    View changes on GitHub

v4.1.5

Compare Source

   🚀 Experimental Features
   🐞 Bug Fixes
    View changes on GitHub

v4.1.4

Compare Source

   🚀 Features
   🐞 Bug Fixes
    View changes on GitHub

v4.1.3

Compare Source

   🚀 Experimental Features
   🐞 Bug Fixes
    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
    View changes on GitHub

v4.1.1

Compare Source

   🚀 Features
   🐞 Bug Fixes
    View changes on GitHub

v4.1.0

Compare Source

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
   🐞 Bug Fixes

✂ Note

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@renovate

renovate Bot commented Aug 26, 2026

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

  • any of the package files in this branch needs updating, or
  • the branch becomes conflicted, or
  • you click the rebase/retry checkbox if found above, or
  • you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: package-lock.json
npm warn Unknown env config "store". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm error code ERESOLVE
npm error ERESOLVE could not resolve
npm error
npm error While resolving: o2s@undefined
npm error Found: vitest@4.1.11
npm error node_modules/vitest
npm error   peerOptional vitest@"^3.0.0 || ^4.0.0" from @storybook/addon-vitest@10.2.19
npm error   node_modules/@storybook/addon-vitest
npm error     dev @storybook/addon-vitest@"^10.2.19" from the root project
npm error   peer vitest@"4.1.11" from @vitest/browser@4.1.11
npm error   node_modules/@vitest/browser
npm error     peerOptional @vitest/browser@"^3.0.0 || ^4.0.0" from @storybook/addon-vitest@10.2.19
npm error     node_modules/@storybook/addon-vitest
npm error       dev @storybook/addon-vitest@"^10.2.19" from the root project
npm error     @vitest/browser@"4.1.11" from @vitest/browser-playwright@4.1.11
npm error     node_modules/@vitest/browser-playwright
npm error       peerOptional @vitest/browser-playwright@"^4.0.0" from @storybook/addon-vitest@10.2.19
npm error       node_modules/@storybook/addon-vitest
npm error         dev @storybook/addon-vitest@"^10.2.19" from the root project
npm error       2 more (vitest, the root project)
npm error     1 more (@vitest/coverage-v8)
npm error   30 more (@vitest/browser-playwright, @vitest/coverage-v8, ...)
npm error
npm error Could not resolve dependency:
npm error dev vitest@"4.1.0" from the root project
npm error
npm error Conflicting peer dependency: @vitest/browser-playwright@4.1.0
npm error node_modules/@vitest/browser-playwright
npm error   peerOptional @vitest/browser-playwright@"4.1.0" from vitest@4.1.0
npm error   node_modules/vitest
npm error     dev vitest@"4.1.0" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry this command with --force or --legacy-peer-deps to accept an incorrect (and potentially broken) dependency resolution.
npm error
npm error
npm error For a full report see:
npm error /runner/cache/others/npm/_logs/2026-08-26T13_07_36_527Z-eresolve-report.txt
npm error A complete log of this run can be found in: /runner/cache/others/npm/_logs/2026-08-26T13_07_36_527Z-debug-0.log

@renovate

renovate Bot commented Aug 26, 2026

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Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.

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