Executive Summary

CVE-2026-3318 is an open redirection vulnerability found in the demo version of the Cradle eCommerce platform. It occurs in the login form endpoint where the 'returnUrl' parameter is used to redirect users. Because the application does not properly validate this parameter, an attacker can manipulate it to redirect users from the legitimate website to an external, potentially malicious URL without their knowledge.

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Impact Analysis

This vulnerability can be exploited by attackers to deceive users into navigating from a trusted site to a malicious one. This can lead to phishing attacks, malware distribution, or other malicious activities by exploiting the trust users have in the legitimate website.

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Detection Guidance

This vulnerability can be detected by testing the login form endpoint of the Cradle eCommerce platform for open redirection via the 'returnUrl' parameter.

You can manually test by crafting URLs that include the 'returnUrl' parameter pointing to an external site and observing if the application redirects without validation.

For example, you can use curl commands to test the behavior:

• curl -I "http://targetsite/login?returnUrl=http://malicious-site.com"
• curl -v "http://targetsite/login?returnUrl=http://malicious-site.com"

If the response includes a redirect (HTTP 3xx) to the external URL specified in 'returnUrl', the vulnerability is present.

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Mitigation Strategies

The immediate step to mitigate this vulnerability is to update the Cradle eCommerce platform to the latest version where the vulnerability has been fixed.

Additionally, as a temporary measure, you can implement input validation or filtering on the 'returnUrl' parameter to ensure it only allows internal URLs or safe redirects.

Monitoring and blocking suspicious redirect attempts at the web application firewall (WAF) level can also help reduce risk.

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Compliance Impact

The provided information does not specify any direct impact of this open redirection vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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