CVE-2025-24963
MEDIUM5.9EPSS 23.6%Vitest browser mode serves arbitrary files
Description
### 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.
Affected packages (1)
- npm/@vitest/browser>= 2.0.4, < 2.1.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-24963
- PATCHhttps://github.com/vitest-dev/vitest
- WEBhttps://github.com/vitest-dev/vitest/blob/f17918a79969d27a415f70431e08a9445b051e45/packages/browser/src/node/plugin.ts#L88-L130
- WEBhttps://github.com/vitest-dev/vitest/commit/2d62051f13b4b0939b2f7e94e88006d830dc4d1f
- WEBhttps://github.com/vitest-dev/vitest/commit/ed9aeba212df04b83ed01810780663ff2cdd0adf
- WEBhttps://github.com/vitest-dev/vitest/security/advisories/GHSA-8gvc-j273-4wm5
- WEBhttps://vitest.dev/guide/browser/config.html#browser-api