The Contact Form Plugin WordPress plugin before 4.3.25 does not properly sanitize and escape the srcdoc attribute in iframes in its custom HTML field type, allowing a logged in user with roles as low as contributor to inject arbitrary javascript into a form which will trigger for any visitor to the form or admins previewing or editing the form.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Contact_form | Fluentforms | * | 4.3.25 (excluding) |