CVE-2025-59057: high-severity vulnerability in remix-run react-router
React Router has XSS Vulnerability
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.6epss 0.5%
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'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. There is no impact if the application is being used in Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been patched in @remix-run/react version 2.17.1 and react-router version 7.9.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Affected products
remix-run · react-routerRelated CVEs — remix-run react-router
In the same product, most dangerous first.
CVE-2025-43864HIGHReact Router allows a DoS via cache poisoning by forcing SPA modeEPSS 20.5%CVE-2025-61686CRITICALReact Router has Path Traversal in File Session StorageEPSS 17.3%CVE-2025-31137HIGHRemix and React Router allow URL manipulation via Host / X-Forwarded-Host headersEPSS 1.2%CVE-2026-22029HIGHReact Router vulnerable to XSS via Open RedirectsEPSS 0.9%CVE-2025-43865HIGHReact Router allows pre-render data spoofing on React-Router framework modeEPSS 0.8%CVE-2026-55685HIGHReact Router: Unauthenticated Denial of Service via Inefficient Route MatchingEPSS 0.7%
References
https://access.redhat.com/errata/RHSA-2026:19712https://access.redhat.com/errata/RHSA-2026:3782https://access.redhat.com/errata/RHSA-2026:3958https://access.redhat.com/errata/RHSA-2026:3960https://access.redhat.com/security/cve/CVE-2025-59057https://bugzilla.redhat.com/show_bug.cgi?id=2428426https://github.com/remix-run/react-router/security/advisories/GHSA-3cgp-3xvw-98x8https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59057.json