CVE-2026-22029

React Router is a router for React. In @remix-run/router version prior to 1.23.2 and react-router 7.0.0 through 7.11.0, React Router (and Remix v1/v2) SPA open navigation redirects originating from loaders or actions in Framework Mode, Data Mode, or the unstable RSC modes can result in unsafe URLs causing unintended javascript execution on the client. This is only an issue if you are creating redirect paths from untrusted content or via an open redirect. There is no impact if Declarative Mode ( ) is being used. This issue has been patched in @remix-run/router version 1.23.2 and react-router version 7.12.0.

What this means for your business

It affects Shopify Remix-Run\/React. It matters if your company, or a supplier that handles your data, runs it.
An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
FIRST's prediction model gives it a 0.9% chance of attack attempts being seen in the next 30 days, ranking above 57% of all known flaws.

What to do

1Check whether your company or your suppliers run Shopify Remix-Run\/React, and which version. The affected versions are listed further down this page.
2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Scoring

CVSS: 8.0 (v3.1)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Assigned by: security-advisories@github.com

Dates

Published: 2026-01-10
Last modified: 2026-09-10
Sources: NVD

Affected products

Shopify Remix-Run\/React- 1.23.2
Shopify React-Router7.0.0 - 7.11.0

As listed in the NVD configuration data. Not a statement about your estate.