The contact-form-7 (aka Contact Form 7) plugin before 5.3.2 for WordPress allows Unrestricted File Upload and remote code execution because a filename may contain special characters.
https://www.jinsonvarghese.com/unrestricted-file-upload-in-contact-form-7/
https://www.getastra.com/blog/911/plugin-exploit/contact-form-7-unrestricted-file-upload/
https://wpscan.com/vulnerability/10508