CVE-2026-86833 — MetForm < 4.3.1 - Unauthenticated HTML Injection in Notification Emails via Field Shortcodes
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing u…
Published: 2026-10-07 · CVSS: 5.4 · CVSS 3.1
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7