GHSA-8gvc-j273-4wm5
Vitest browser mode serves arbitrary files
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @vitest/browser | >= 2.0.4, < 2.1.9 | 2.1.9 |
| npm | @vitest/browser | >= 3.0.0, < 3.0.4 | 3.0.4 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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`](https://vitest.dev/guide/browser/config.html#browser-api), 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
1. Run `npx vitest init browser`
1. Run `npm run test:browser`
2. 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`](https://vitest.dev/guide/browser/config.html#browser-api) may get any files exposed.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-8gvc-j273-4wm5
- https://nvd.nist.gov/vuln/detail/CVE-2025-24963
- https://github.com/vitest-dev/vitest/commit/2d62051f13b4b0939b2f7e94e88006d830dc4d1f
- https://github.com/vitest-dev/vitest/commit/ed9aeba212df04b83ed01810780663ff2cdd0adf
- https://github.com/vitest-dev/vitest
- https://github.com/vitest-dev/vitest/blob/f17918a79969d27a415f70431e08a9445b051e45/packages/browser/src/node/plugin.ts#L88-L130
- https://vitest.dev/guide/browser/config.html#browser-api