Vite is a website frontend framework. When Vite's HTML transformation is invoked manually via `server.transformIndexHtml`, the original request URL is passed in unmodified, and the `html` being transformed contains inline module scripts (`<script type="module">...</script>`), it is possible to inject arbitrary HTML into the transformed output by supplying a malicious URL query string to `server.transformIndexHtml`. Only apps using `appType: 'custom'` and using the default Vite HTML middleware are affected. The HTML entry must also contain an inline script. The attack requires a user to click on a malicious URL while running the dev server. Restricted files aren't exposed to the attacker. This issue has been addressed in vite@5.0.5, vite@4.5.1, and vite@4.4.12. There are no known workarounds for this vulnerability.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| vite(npm) | 4.4.0 | 4.4.12 | N/A |
| vite(npm) | 4.5.0 | 4.5.1 | N/A |
| vite(npm) | 5.0.0 | 5.0.5 | N/A |
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