CVE-2026-22029 is a high-severity vulnerability affecting the Shopify components React Router and Remix. This vulnerability allows for open navigation redirects in Single Page Applications (SPAs) that can result in unsafe URLs. Specifically, it impacts versions of React Router from 7.0.0 through 7.11.0 and @remix-run/router prior to 1.23.2. The vulnerability arises from the handling of redirect paths that originate from untrusted content, which can lead to unintended JavaScript execution on the client side.
The CVSS score of this vulnerability is 8, indicating a high severity level that organizations must address promptly. Risk to organizations includes potential exposure to malicious redirects that could compromise client safety. This issue is relevant in Framework Mode, Data Mode, or unstable RSC modes but does not affect the Declarative Mode (<BrowserRouter>), which is a more secure option.
This issue was published on January 10, 2026, and has been patched in the respective versions mentioned above. Organizations using affected versions should prioritize remediation to mitigate associated risks and ensure application security.
Immediate action is urged; organizations should prioritize patching to prevent potential exploitation.
Vulnerability Details
The vulnerability allows for open navigation redirects originating from loaders or actions, potentially leading to unsafe JavaScript execution on the client. The affected products include remix-run/react and react-router. The vulnerability has been assigned CVE-2026-22029 and classified under CWE-79.
The publication date for this vulnerability is January 10, 2026. Organizations are encouraged to assess their exposure and mitigate risks associated with this vulnerability.
Technical Analysis
The root cause of CVE-2026-22029 lies in the handling of navigation redirects that can be influenced by untrusted input. Attackers may leverage this vulnerability to create redirect paths that execute arbitrary JavaScript on the client’s browser.
This vulnerability operates over a network attack vector, requiring low privileges and user interaction to exploit. The attack complexity is rated as high, meaning successful exploitation would require specific conditions to be met.
In terms of impacts, the vulnerability has high confidentiality and integrity impacts due to the potential for unauthorized JavaScript execution, while availability is not affected.
Risk & Impact Analysis
Real-world deployment of this vulnerability can lead to significant risks for organizations, particularly those utilizing the affected versions of React Router and Remix. The potential for exploitation through open redirects could result in unauthorized access to sensitive information or execution of malicious scripts.
The blast radius for this vulnerability could extend to any client using the affected applications, making it crucial for organizations to understand the implications of this vulnerability on their user base.
Given the high CVSS score and the potential for exploitation, organizations should prioritize patching immediately. Implementing security best practices, including validating redirect paths and employing input sanitization, will help mitigate the risks associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include react-router versions from 7.0.0 to 7.11.0 and @remix-run/router versions prior to 1.23.2. Organizations should ensure they upgrade to the patched versions to mitigate the risk.
Mitigation & Remediation
To address CVE-2026-22029, organizations should patch affected systems by upgrading to react-router version 7.12.0 or newer and @remix-run/router version 1.23.2 or newer. If immediate upgrading is not feasible, organizations should implement workarounds by avoiding the use of untrusted redirect paths.
Configuration hardening should also be employed to validate redirect paths and sanitize user inputs to prevent open redirection attacks. It is advisable to conduct thorough testing and validation of the application, particularly focusing on navigation functionality.
For comprehensive testing of security measures and vulnerabilities, organizations may consider utilizing penetration testing services.
Detection Guidance
Organizations should monitor logs for indicators of potential exploitation attempts, such as anomalous redirect patterns or unusual JavaScript execution attempts. Behavioral anomalies within the application should be tracked, along with any modifications to the routing logic.
Network signatures reflecting redirection behavior can also provide insights into potential exploitation. Regular audits of the application should be conducted to identify any security weaknesses and ensure compliance with security best practices.
AppSecure Threat Intelligence Insight
CVE-2026-22029 represents a critical issue in web application security, highlighting the importance of secure routing practices. Organizations must recognize the trends in vulnerabilities associated with open redirects and prioritize preventive measures.
This vulnerability serves as a reminder of the necessity for ongoing security reviews, development of secure coding practices, and the implementation of rigorous testing strategies. Security teams can benefit from learning from such vulnerabilities to enhance their defensive strategies.
For further insights and best practices on security testing, organizations can explore our resources on penetration testing methodology and other relevant topics.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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