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GHSA-v2wj-q39q-566r
viteviteSummary
The contents of files that are specified by server.fs.deny can be returned to the browser.
Impact
Only apps that match the following conditions are affected:
- explicitly exposes the Vite dev server to the network (using
--hostorserver.hostconfig option) - the sensitive file exists in the allowed directories specified by
server.fs.allow - the sensitive file is denied with a pattern that matches a file by
server.fs.deny
Details
On the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended.
PoC
- Start the dev server:
pnpm exec vite root --host 127.0.0.1 --port 5175 --strictPort - Confirm that
server.fs.denyis enforced (expect 403):curl -i http://127.0.0.1:5175/src/.env | head -n 20<img width="3944" height="1092" alt="image" src="https://github.com/user-attachments/assets/ecb9f2e0-e08f-4ac7-b194-e0f988c4cd4f" /> - Confirm that the same files can be retrieved with query parameters (expect 200): <img width="2014" height="373" alt="image" src="https://github.com/user-attachments/assets/76bc2a6a-44f4-4161-ae47-eab5ae0c04a8" />
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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