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Files denied by server.fs.deny were sent if the URL ended with \ when the dev server is running on Windows.
Only apps that match the following conditions are affected:
server.host config option)server.fs.deny can contain patterns matching against files (by default it includes .env, .env.*, *.{crt,pem} as such patterns). These patterns were able to bypass by using a back slash(\). The root cause is that fs.readFile('/foo.png/') loads /foo.png.
npm create vite@latest
cd vite-project/
cat "secret" > .env
npm install
npm run dev
curl --request-target /.env\ http://localhost:5173
Files denied by server.fs.deny were sent if the URL ended with \ when the dev server is running on Windows.
Only apps that match the following conditions are affected:
server.host config option)server.fs.deny can contain patterns matching against files (by default it includes .env, .env.*, *.{crt,pem} as such patterns). These patterns were able to bypass by using a back slash(\). The root cause is that fs.readFile('/foo.png/') loads /foo.png.
npm create vite@latest
cd vite-project/
cat "secret" > .env
npm install
npm run dev
curl --request-target /.env\ http://localhost:5173
This medium-severity vulnerability could be exploited under certain conditions to compromise security controls or access sensitive information. Should be addressed in a timely manner.
Probability of exploitation in the next 30 days · more likely than 63.4% of all CVEs.
Apply security patches to version 7.1.11, 7.0.8, 6.4.1, 5.4.21, 5.4.21, 5.4.21, 5.4.21 immediately
Isolate affected systems from untrusted networks until patching is complete
Implement enhanced monitoring for exploitation attempts and unusual behavior