CVE-2025-59057: React Router has XSS Vulnerability
(updated )
A XSS vulnerability exists in in React Router’s meta()/<Meta> APIs in Framework Mode 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 (
<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>).
References
- access.redhat.com/errata/RHSA-2026:19712
- access.redhat.com/errata/RHSA-2026:3782
- access.redhat.com/errata/RHSA-2026:3958
- access.redhat.com/errata/RHSA-2026:3960
- access.redhat.com/security/cve/CVE-2025-59057
- bugzilla.redhat.com/show_bug.cgi?id=2428426
- github.com/advisories/GHSA-3cgp-3xvw-98x8
- github.com/remix-run/react-router/blob/main/CHANGELOG.md
- github.com/remix-run/react-router/commit/0e774855797fcb3c7538c269158f4541beb55a1b
- github.com/remix-run/react-router/pull/14316
- github.com/remix-run/react-router/releases/tag/react-router@7.9.0
- github.com/remix-run/react-router/security/advisories/GHSA-3cgp-3xvw-98x8
- nvd.nist.gov/vuln/detail/CVE-2025-59057
- security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59057.json
Code Behaviors & Features
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