7.5

CVE-2025-43864: remix-run react-router

CVSS: 7.5v3.1HighDeferred
AliasesGHSA-f46r-rw29-r322
Published 25-04-2025Last modified 25-04-2025
Open JSON

Vulnerability summary

CVE-2025-43864 is a high (CVSS 7.5) vulnerability in remix-run react-router. EPSS estimates a 20.47% chance of exploitation in the next 30 days, higher than 97.4% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
20.47%
0%100%
High · +0.27 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-04-2025
    PublishedVulnerability first disclosed.
  2. 25-04-2025
    Last modifiedVulnerability information updated.

Description

React Router is a router for React. Starting in version 7.2.0 and prior to version 7.5.2, it is possible to force an application to switch to SPA mode by adding a header to the request. If the application uses SSR and is forced to switch to SPA, this causes an error that completely corrupts the page. If a cache system is in place, this allows the response containing the error to be cached, resulting in a cache poisoning that strongly impacts the availability of the application. This issue has been patched in version 7.5.2.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

20.47%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

+0.27 pp

From 20.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
20.47%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Npm1 product
  • react-router≥ 7.2.0, < 7.5.2
Remix-run1 product

2 vendors · 2 products

References

5 links