CVE-2026-13726 Multiple Page Generator Plugin – MPG < 4.1.8 - Reflected XSS via mpg_shortcode
Unauthenticated attackers can execute arbitrary scripts in victim browsers via reflected XSS in the MPG WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-13726?
CVE-2026-13726 is a high-severity cross-site scripting vulnerability in Unknown MPG, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-13726?
How do I fix CVE-2026-13726?
No fix has been published for CVE-2026-13726 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-13726 being exploited?
There is no known exploitation of CVE-2026-13726 in the wild and no public exploit code.
Sources
Also known as GHSA-26gh-v8rm-xxgj.