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CVE-2025-24963

Browser mode serves arbitrary files in vitest

5.9 MediumPublic exploitFix available

Vitest is a testing framework powered by Vite. The __screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. This code was added by commit 2d62051. Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed. This issue has been addressed in versions 2.1.9 and 3.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

2.40%Up 2.4 points since Feb 5, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.9

Browser mode serves arbitrary files in vitest

Vitest is a testing framework powered by Vite. The __screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. This code was added by commit 2d62051. Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed. This issue has been addressed in versions 2.1.9 and 3.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2025-24963
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2025-0224 5.9

Vitest is a testing framework powered by Vite. The __screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. This code was added by commit 2d62051. Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed. This issue has been addressed in versions 2.1.9 and 3.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
EUVD-2025-0224
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-8gvc-j273-4wm5 5.9

Vitest browser mode serves arbitrary files

Summary

__screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.

Details

This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. https://github.com/vitest-dev/vitest/blob/f17918a79969d27a415f70431e08a9445b051e45/packages/browser/src/node/plugin.ts#L88-L130

This code was added by https://github.com/vitest-dev/vitest/commit/2d62051f13b4b0939b2f7e94e88006d830dc4d1f.

PoC

  1. Create a directory and change the current directory to that directory
  2. Run npx vitest init browser
  3. Run npm run test:browser
  4. Run curl http://localhost:63315/__screenshot-error?file=/path/to/any/file

Impact

Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed.

Record
GHSA-8gvc-j273-4wm5
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 5.9

Vitest is a testing framework powered by Vite. The __screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. This code was added by commit 2d62051. Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed. This issue has been addressed in versions 2.1.9 and 3.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2025-24963
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 5.9

Browser mode serves arbitrary files in vitest

Vitest is a testing framework powered by Vite. The __screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. This code was added by commit 2d62051. Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed. This issue has been addressed in versions 2.1.9 and 3.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2025-24963
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-8gvc-j273-4wm5 5.9

Vitest browser mode serves arbitrary files

Summary

__screenshot-error handler on the browser mode HTTP server that responds any file on the file system. Especially if the server is exposed on the network by browser.api.host: true, an attacker can send a request to that handler from remote to get the content of arbitrary files.

Details

This __screenshot-error handler on the browser mode HTTP server responds any file on the file system. https://github.com/vitest-dev/vitest/blob/f17918a79969d27a415f70431e08a9445b051e45/packages/browser/src/node/plugin.ts#L88-L130

This code was added by https://github.com/vitest-dev/vitest/commit/2d62051f13b4b0939b2f7e94e88006d830dc4d1f.

PoC

  1. Create a directory and change the current directory to that directory
  2. Run npx vitest init browser
  3. Run npm run test:browser
  4. Run curl http://localhost:63315/__screenshot-error?file=/path/to/any/file

Impact

Users explicitly exposing the browser mode server to the network by browser.api.host: true may get any files exposed.

Record
GHSA-8gvc-j273-4wm5
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVCLSA-2026-1793093026 No score

TuxCare security update for vitest (4 CVEs)

TuxCare rebuilt vitest to address 4 CVEs. Fixed in 2.0.5-tuxcare.1.

Record
CLSA-2026-1793093026
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
@vitest/browser
npm
 2.0.4 up to 2.1.9
2.1.9
@vitest/browser
npm
 3.0.0 up to 3.0.4
3.0.4
vitest
TuxCare:npm
From an advisory covering 4 CVEs
 2.0.5-tuxcare.0 up to 2.0.5-tuxcare.1, plus listed versions
2.0.5
2.0.5-tuxcare.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubhiteshpatra/CVE-2025-249632025-04-23
NucleiVitest Browser Mode - Local File Read

History

History
RecordedChangedSources
affected, exploits, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, Nuclei, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-24963 is a medium vulnerability (CVSS 5.9) in Vitest-dev Vitest, published February 4, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.40%, the 84th percentile. Fixed in @vitest/browser 2.1.9.

References

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