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🍪 fix: input validation for lang cookie (#4024)

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Co-authored-by: DanielAlt <daniel.altenburg@proton.me>
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Daniel 2024-09-13 09:00:59 -04:00 • committed by GitHub
parent 4ef5ae6f71
commit c792e3279f
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3
api/server/index.js
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@ -114,7 +114,8 @@ const startServer = async () => {
app.use((req, res) => {
// Replace lang attribute in index.html with lang from cookies or accept-language header
const lang = req.cookies.lang || req.headers['accept-language']?.split(',')[0] || 'en-US';
const updatedIndexHtml = indexHTML.replace(/lang="en-US"/g, `lang="${lang}"`);
const saneLang = lang.replace(/"/g, '&quot;'); // sanitize untrusted user input
const updatedIndexHtml = indexHTML.replace(/lang="en-US"/g, `lang="${saneLang}"`);
res.send(updatedIndexHtml);
});