CVE-2025-61686
9.1 · CRITICALOverview
CVE-2025-61686 is a critical-severity vulnerability affecting shopify react-router\/node. It was published on January 10, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage() is being used from @react-router/node (or @remix-run/node/@remix-run/deno in Remix v2) with an unsigned cookie, it is possible for an attacker to cause the session to try to read/write from a location outside the specified session file directory. The success of the attack would depend on the permissions of the web server process to access those files. Read files cannot be returned directly to the attacker. Session file reads would only succeed if the file matched the expected session file format. If the file matched the session file format, the data would be populated into the server side session but not directly returned to the attacker unless the application logic returned specific session information. This issue has been patched in @react-router/node version 7.9.4, @remix-run/deno v
Remediation
Check the references section for vendor advisories and patches from shopify. Update react-router\/node to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| shopify | react-router\/node | >= 7.0.0, < 7.9.4 | Affected |
| shopify | remix-run\/deno | >= 0, < 2.17.2 | Affected |
| shopify | remix-run\/node | >= 0, < 2.17.2 | Affected |
Frequently Asked Questions
What is CVE-2025-61686?
CVE-2025-61686 is a critical-severity vulnerability affecting shopify react-router\/node. It was published on January 10, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2025-61686?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-61686?
Check the references section for vendor advisories and patches from shopify. Update react-router\/node to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-61686?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-61686 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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