{"id":"CVE-2023-49293","aliases":["GHSA-92r3-m2mg-pj97"],"url":"https://o3.security/vulnerability/CVE-2023-49293","summary":"Cross-site Scripting in `server.transformIndexHtml` via URL payload in vite","details":"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.","published":"2023-12-04T23:03:30.752Z","modified":"2026-08-08T03:47:47.760098749Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"vite","fixedVersion":"4.4.12"},{"ecosystem":"npm","name":"vite","fixedVersion":"4.5.1"},{"ecosystem":"npm","name":"vite","fixedVersion":"5.0.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49293.json"},{"type":"ADVISORY","url":"https://github.com/vitejs/vite/security/advisories/GHSA-92r3-m2mg-pj97"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49293"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:47:47.760098749Z"}}