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HIGH

CVE-2025-43865

CVSS v3

8.2

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • react-routernpmfrom 7.0.0-pre.0 · fixed in 7.5.2

Vendor advisories

  • CVE-2025-43865 Red Hat Product Security4 products fixed · 1 known affected

    react-router: React Router allows pre-render data spoofing on React-Router framework mode

    rhoai/odh-dashboard-rhel8 as a component of Red Hat OpenShift AI (RHOAI)

  • RHSA-2025:13904 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHOAI 2.23.0 - Red Hat OpenShift AI

Full record on NVD

Description

React Router is a router for React. In versions on the 7.0 branch prior to version 7.5.2, it's possible to modify pre-rendered data by adding a header to the request. This allows to completely spoof its contents and modify all the values ​​of the data object passed to the HTML. This issue has been patched in version 7.5.2.

Technical details

Published
2025-04-25

Frequently asked questions

What is CVE-2025-43865?

React Router is a router for React. In versions on the 7.0 branch prior to version 7.5.2, it's possible to modify pre-rendered data by adding a header to the request. This allows to completely spoof its contents and modify all the values ​​of the data object passed to the HTML. This issue has been patched in version 7.5.2.

Is CVE-2025-43865 actively exploited?

Active exploitation of CVE-2025-43865 has not been confirmed. Its EPSS score was 0.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-43865?

CVE-2025-43865 has a CVSS v3 base score of 8.2 (HIGH severity).

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