MPG request input permits unauthenticated reflected XSS
MPG before 4.1.8 reflects attacker-controlled request input without sufficient sanitization and output escaping. An unauthenticated attacker can construct a URL or request that executes script in the affected site's origin when a victim opens it. The CNA record does not disclose the endpoint, action, parameter or rendering function.
- Component
- MPG
- Plugin slug
mpg- Affected
- < 4.1.8
- Safe version
4.1.8- Published
- Jul 27, 2026
This CVE was published Jul 27, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update MPG to 4.1.8 or later. Avoid untrusted links targeting the site until the plugin is patched and review request logs for encoded markup sent to MPG-controlled pages.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L