CVE-2025-59057
HIGHReact Router 7.0.0-7.8.2 & @remix-run/react 1.15.0-2.17.0 XSS via meta()/<Meta> APIs
Title source: llmExploitation Summary
EIP tracks 2 public exploits for CVE-2025-59057. PoCs published by ibreakthingsforaliving, boroeurnprach.
AI-analyzed exploit summary This repository contains a functional proof-of-concept for CVE-2025-59057, demonstrating an XSS vulnerability in a React Router application. The exploit is embedded in the metadata of the `/vuln` route, where a malicious script tag is injected into the JSON-LD schema markup.
Description
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.
Exploits (2)
This repository contains a functional proof-of-concept for CVE-2025-59057, demonstrating an XSS vulnerability in a React Router application. The exploit is embedded in the metadata of the `/vuln` route, where a malicious script tag is injected into the JSON-LD schema markup.
The repository describes a XSS vulnerability in React Router's `meta()/<Meta>` APIs during SSR when generating `script:ld+json` tags. However, the provided code snippets do not include an actual exploit or PoC, only configuration files and a README describing the vulnerability.
References (8)
Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N