The Download Manager WordPress plugin before 3.3.73, Download Manager WordPress plugin before 7.6.2 does not verify that a visitor is allowed to access a package before its media-preview renderers issue a download key for it, allowing unauthenticated visitors to download password-locked and role-restricted files by reading the key from a public page.

The Download Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'REFERRER' parameter in all versions up to, and including, 3.3.57 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.

The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'notfound' parameter in all versions up to, and including, 3.3.58 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Download Manager WordPress plugin before 3.3.71 does not sufficiently sanitise and escape a package setting before outputting it back in a page, which could allow users with the Author role and above to perform Stored Cross-Site Scripting attacks against any visitor who opens the package's download dialogue, including administrators. Only sites running PHP below 8.1 are affected, as the sanitisation applied when the setting is saved does not neutralise single quotes there.

Missing Authorization vulnerability in Shahjada Download Manager download-manager allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Download Manager: from n/a through <= 3.3.03.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in W3 Eden, Inc. Download Manager allows Stored XSS.This issue affects Download Manager: from n/a through 3.2.84.