What is CVE-2025-59057?

CVE-2025-59057 is a high-severity vulnerability in Remix-run React-router, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-01-10.

How severe is CVE-2025-59057?

High severity. CVSS v3 base score is 7.6 out of 10.

Is CVE-2025-59057 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Remix-run React-router

CVE-2025-59057

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 scr…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (6.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.

Affected products

Remix-run React-router — versions @remix-run/react >= 1.15.0, < 2.17.1, react-router >= 7.0.0, < 7.9.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

boroeurnprach/CVE-2025-59057-PoC

References

https://github.com/remix-run/react-router/security/advisories/GHSA-3cgp-3xvw-98x8 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2025-59057?: CVE-2025-59057 is a high-severity vulnerability in Remix-run React-router, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-01-10.
How severe is CVE-2025-59057?: High severity. CVSS v3 base score is 7.6 out of 10.
Is CVE-2025-59057 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.