Avoid rendering resource based on unsanitized user input
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ID: javascript-express/external-resource
Language: JavaScript
Severity: Warning
Category: Security
CWE: 706
Description
Rendering resources based on unsanitized user input should be avoided. At a minimum, one should use a safelist to restrict the potential resources that are exposed.
Non-Compliant Code Examples
app.get("/", (req, res) => {
res.render(req.body.path)
res.render(req.cookies.path)
res.render(req.headers.path)
res.render(req.params.path)
res.render(req.query.path)
})
Compliant Code Examples
app.get("/", (req, res) => {
const path = req.body.path
if (["posts", "pages"].includes(path)) {
return res.render(`${path}/success`)
}
res.render("error-page")
})
