Is CVE-2026-13726 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-13726 being exploited in the wild.

How severe is CVE-2026-13726?

Informational severity, with a CVSS score of 7.1, published 27 July 2026.

Which products and versions are affected?

Porthas Multiple Page Generator (MPG) < 4.1.8.

Is there a fix for CVE-2026-13726?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-13726 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-13726?

Check whether you run Porthas Multiple Page Generator (MPG) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-13726: Porthas MPG reflected XSS via mpg_shortcode

Q: Is there a fix for CVE-2026-13726?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-13726 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-13726?

Check whether you run Porthas Multiple Page Generator (MPG) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-13726 · Severity: info · CVSS 7.1 · Published 2026-07-27

The Multiple Page Generator (MPG) plugin for WordPress, which helps site owners create large numbers of landing pages, contains a security flaw that allows for reflected cross-site scripting. An attacker can trick a user into clicking a malicious link, which then executes unauthorized code in the user's browser. This could lead to the theft of login cookies, unauthorized actions on the website, or the redirection of visitors to malicious sites.

Vendors: Porthas.

Quick answers

Is CVE-2026-13726 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-13726 being exploited in the wild.
How severe is CVE-2026-13726?: Informational severity, with a CVSS score of 7.1, published 27 July 2026.
Which products and versions are affected?: Porthas Multiple Page Generator (MPG) < 4.1.8.
Is there a fix for CVE-2026-13726?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-13726 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-13726?: Check whether you run Porthas Multiple Page Generator (MPG) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Multiple Page Generator (MPG) plugin for WordPress fails to properly sanitize and escape the 'mpg_shortcode' parameter before reflecting it back in the HTTP response. This vulnerability allows an unauthenticated remote attacker to perform Reflected Cross-Site Scripting (XSS) by inducing a victim to visit a specially crafted URL. Successful exploitation allows the execution of arbitrary JavaScript in the context of the victim's browser session, potentially leading to session hijacking or unauthorized administrative actions if the victim is an authenticated administrator. The issue is fixed in version 4.1.8.

Affected products

Porthas Multiple Page Generator (MPG) < 4.1.8

Timeline

2026-07-06: disclosed: Initial public disclosure by WPScan
2026-07-27: advisory: NVD publication date

References

https://wpscan.com/vulnerability/4f97b6c6-c05b-4ea5-987d-d289b89cdea8/

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