XSS in the mail component

The mail component of the ContactForm 7 is not properly escaped against an XSS attack.

This vulnerability affects the following application versions:

• Contact Form 7 4.6
• Contact Form 7 4.6.1
• Contact Form 7 4.7
• Contact Form 7 4.8
• Contact Form 7 4.8.1
• Contact Form 7 4.9
• Contact Form 7 4.9.1
• Contact Form 7 4.9.2
• Contact Form 7 5.0
• Contact Form 7 5.0.1
• Contact Form 7 5.0.2
• Contact Form 7 5.0.3
• Contact Form 7 5.0.4
• Contact Form 7 5.0.5
• Contact Form 7 5.1
• Contact Form 7 5.1.1
• Contact Form 7 5.1.2
• Contact Form 7 5.1.3
• Contact Form 7 5.1.4
• Contact Form 7 5.1.5
• Contact Form 7 5.1.6
• Contact Form 7 5.1.7
• Contact Form 7 5.1.8
• Contact Form 7 5.1.9
• Contact Form 7 5.2
• Contact Form 7 5.2.1
• Contact Form 7 5.2.2
• Contact Form 7 5.3
• Contact Form 7 5.3.1
• Contact Form 7 5.3.2
• Contact Form 7 5.4
• Contact Form 7 5.4.1
• Contact Form 7 5.4.2
• Contact Form 7 5.5
• Contact Form 7 5.5.1
• Contact Form 7 5.5.2
• Contact Form 7 5.5.3
• Contact Form 7 5.5.4
• Contact Form 7 5.5.5
• Contact Form 7 5.5.6
• Contact Form 7 5.5.6.1
• Contact Form 7 5.6
• Contact Form 7 5.6.1
• Contact Form 7 5.6.2
• Contact Form 7 5.6.3
• Contact Form 7 5.6.4
• Contact Form 7 5.7
• Contact Form 7 5.7.1
• Contact Form 7 5.7.2
• Contact Form 7 5.7.3