CVEvulnerability

CVE-2026-53666

6.1 MEDIUM Published 2026-07-27 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-07-27
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-470

Description

React Router is a router for React. In versions 6.4.0 through 7.17.0, if application code was written in a way that allows attacker-supplied input to overwrite certain aspects of errors caught by the SSR process, then it was possible for an attacker to trigger unexpected constructor execution on the client, which would in turn trigger an outbound network request. This is only possible with very specific (and unlikely) application-layer code. Note that this does not impact an application if it is using Declarative Mode. It only impacts Framework Mode and Data Mode applications that perform manual SSR/hydration. This issue has been fixed in version 7.18.0.

Affected configurations

• shopify react-router (>= 6.4.0 < 7.18.0)

Related

Weakness · CWE (1)

  • CWE-470 Use of Externally-Controlled Input to Select Classes or Code weakness

References