React Router has XSS Vulnerability
A XSS vulnerability exists in in React Router's `meta()`/`<Meta>` APIs in [Framework Mode](https://reactrouter.com/start/modes#framework) when generating `script:ld+json` tags which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the tag. > [!NOTE] > This does not impact applications using [Declarative Mode](https://reactrouter.com/start/modes#declarative) (`<BrowserRouter>`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`<RouterProvider>`).
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-59057US | — | Exploit | ||
React Router is a router for React. In @remix-run/react versions 1.15.0 through 2.17.0. and react-router versions 7.0.0 through 7.8.2, a XSS vulnerability exists in in React Router… | ||||
references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:19712WEB
- https://access.redhat.com/errata/RHSA-2026:3782WEB
- https://access.redhat.com/errata/RHSA-2026:3958WEB
- https://access.redhat.com/errata/RHSA-2026:3960WEB
- https://access.redhat.com/security/cve/CVE-2025-59057WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2428426WEB
- https://github.com/remix-run/react-routerPACKAGE
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v790WEB
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