CVE-2026-13726
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.
No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.
Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.