Stored XSS in Cart Lift WordPress Plugin

Executive Summary

CVE-2026-57417 is a Cross Site Scripting (XSS) vulnerability found in the WordPress Cart Lift Plugin versions 3.1.57 and below.

This vulnerability occurs due to improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that execute when users visit the affected site.

Exploitation typically requires user interaction, such as clicking a malicious link or visiting a crafted page, and often involves a privileged user.

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Detection Guidance

Detecting this stored Cross-Site Scripting (XSS) vulnerability in the Cart Lift plugin (versions <= 3.1.57) on your WordPress system requires checking for signs of exploitation or verifying the plugin version.

• Check the installed version of the Cart Lift plugin. If it is 3.1.57 or below, the system is vulnerable. You can verify the version by navigating to the WordPress admin dashboard, then going to 'Plugins' and locating the Cart Lift plugin.
• Inspect the WordPress database for suspicious entries in plugin-related tables, such as wp_options or custom tables created by Cart Lift. Look for unexpected JavaScript or HTML payloads that may indicate an XSS attack.
• Review web server logs for unusual requests targeting the Cart Lift plugin endpoints. Attackers may attempt to inject malicious scripts via input fields or parameters handled by the plugin.
• Use a web application firewall (WAF) or security plugin (e.g., Patchstack, Wordfence) to monitor and block XSS attack attempts. These tools can log and alert on suspicious activity.
• Manually test input fields associated with the Cart Lift plugin by submitting benign XSS payloads (e.g., <script>alert(1)</script>) to see if they are stored and rendered in the output. This should only be done in a controlled environment to avoid unintended consequences.

If you suspect exploitation, immediately update the plugin to version 3.1.58 or later, as this version contains the fix for the vulnerability.

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Impact Analysis

Successful exploitation of this vulnerability can lead to attackers injecting malicious scripts into the website.

• Execution of malicious redirects or advertisements on the site.
• Potential compromise of user data and site integrity.
• Moderate severity with a CVSS score of 7.1, indicating a significant risk especially in mass exploitation campaigns.

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Compliance Impact

This vulnerability, a stored Cross-Site Scripting (XSS) issue, can impact compliance with standards and regulations like GDPR and HIPAA due to its potential to compromise data integrity and confidentiality.

• GDPR: Under GDPR, organizations must protect personal data from unauthorized access or manipulation. A stored XSS vulnerability could allow attackers to inject malicious scripts that steal user data (e.g., cookies, session tokens, or form inputs), leading to unauthorized access to personal information. This may result in a data breach, triggering GDPR's reporting requirements and potential fines for failing to implement adequate security measures.
• HIPAA: For organizations handling protected health information (PHI), HIPAA requires safeguards to ensure the confidentiality, integrity, and availability of PHI. A stored XSS attack could enable unauthorized access to PHI or allow attackers to manipulate data, violating HIPAA's Security Rule. This could lead to non-compliance penalties if the vulnerability is exploited to expose or alter sensitive health data.
• General impact: The vulnerability's CVSS score of 7.1 indicates a moderate risk, but its potential for exploitation in mass campaigns could amplify compliance risks. Organizations failing to patch or mitigate the issue may be deemed non-compliant with regulations requiring timely security updates and risk assessments.

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Mitigation Strategies

To mitigate the vulnerability in the WordPress Cart Lift Plugin (versions 3.1.57 and below), the immediate recommended step is to update the plugin to version 3.1.58 or later.

Until the update can be applied, Patchstack has provided a mitigation rule that can be used to block attacks targeting this vulnerability.

If you are unable to update immediately, seek assistance from your hosting provider or a developer to apply the mitigation rule or other protective measures.

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