The MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites plugin for WordPress is vulnerable to privilege escalation due to a missing authorization checks on the register_site function in all versions up to, and including, 5.2 when a site is left in an unconfigured state. This makes it possible for unauthenticated attackers to log in as an administrator on instances where MainWP Child is not yet connected to the MainWP Dashboard. IMPORTANT: this only affects sites who have MainWP Child installed and have not yet connected to the MainWP Dashboard, and do not have the unique security ID feature enabled. Sites already connected to the MainWP Dashboard plugin and do not have the unique security ID feature enabled, are NOT affected and not required to upgrade. Please note 5.2.1 contains a partial patch, though we consider 5.3 to be the complete patch.

The MainWP Dashboard – The Private WordPress Manager for Multiple Website Maintenance plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘mwp_setup_purchase_username’ parameter in versions up to, and including, 3.1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The MainWP Child Reports plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.2. This is due to missing or incorrect nonce validation on the network_options_action() function. This makes it possible for unauthenticated attackers to update arbitrary options that can be leveraged for privilege escalation via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This is only exploitable on multisite instances.

Missing Authorization vulnerability in MainWP MainWP UpdraftPlus Extension.This issue affects MainWP UpdraftPlus Extension: from n/a through 4.0.6.

Missing Authorization vulnerability in MainWP MainWP Staging Extension.This issue affects MainWP Staging Extension: from n/a through 4.0.3.

Improper Control of Generation of Code ('Code Injection') vulnerability in MainWP MainWP Code Snippets Extension allows Code Injection.This issue affects MainWP Code Snippets Extension: from n/a through 4.0.2.

Cross-Site Request Forgery (CSRF) vulnerability in MainWP MainWP Child Reports.This issue affects MainWP Child Reports: from n/a through 2.1.1.

Deserialization of Untrusted Data vulnerability in MainWP MainWP Links Manager Extension.This issue affects MainWP Links Manager Extension: from n/a through 2.1.

Unrestricted Upload of File with Dangerous Type vulnerability in MainWP MainWP File Uploader Extension.This issue affects MainWP File Uploader Extension: from n/a through 4.1.

Missing Authorization vulnerability in MainWP MainWP Wordfence Extension.This issue affects MainWP Wordfence Extension: from n/a through 4.0.7.