The Backup and Staging by WP Time Capsule plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the the UploadHandler.php file and no direct file access prevention in all versions up to, and including, 1.22.21. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Deserialization of Untrusted Data vulnerability in Revmakx Backup and Staging by WP Time Capsule allows Object Injection.This issue affects Backup and Staging by WP Time Capsule: from n/a through 1.22.21.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Revmakx Backup and Staging by WP Time Capsule allows SQL Injection.This issue affects Backup and Staging by WP Time Capsule: from n/a through 1.22.21.

Improper Privilege Management vulnerability in Revmakx Backup and Staging by WP Time Capsule allows Privilege Escalation, Authentication Bypass.This issue affects Backup and Staging by WP Time Capsule: from n/a through 1.22.20.

The Backup and Staging by WP Time Capsule WordPress plugin before 1.22.7 does not sanitise and escape the error parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting