CVE-2026-13726
Deferred Deferred - Pending Action

Reflected Cross-Site Scripting in MPG WordPress Plugin

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: WPScan

Description
The MPG WordPress plugin before 4.1.8 does not sanitise and escape a parameter before reflecting it back in the response, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting against a victim who is induced to send a crafted request.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-08-16
AI Q&A
2026-07-27
EPSS Evaluated
2026-08-15
NVD
CVE-2026-13726
EUVD
EUVD-2026-49075

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mpg multiple_page_generator_plugin to 4.1.8 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Reflected Cross-Site Scripting (XSS) vulnerability in the MPG WordPress plugin before version 4.1.8. The plugin does not properly sanitize and escape a parameter called mpg_shortcode before reflecting it back in the response. This allows unauthenticated attackers to inject malicious scripts into web pages viewed by victims who are tricked into sending a specially crafted request.

Detection Guidance

To detect this vulnerability, check the installed version of the MPG WordPress plugin. If it is below 4.1.8, the system is vulnerable. You can verify the version via WordPress admin panel or by inspecting plugin files on the server.

Impact Analysis

An attacker could exploit this vulnerability to execute malicious scripts in the context of a victim's browser session. This could lead to theft of session cookies, account takeover, or delivery of malware. Victims may unknowingly trigger the attack by clicking a malicious link or visiting a compromised website.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations using the vulnerable plugin may face compliance violations, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Immediately update the MPG WordPress plugin to version 4.1.8 or later. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

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