WordPress Plugin Curtain 1.0.2 contains a cross-site request forgery vulnerability that allows attackers to activate or deactivate site maintenance mode by crafting malicious requests. Attackers can trick authenticated administrators into submitting forged requests to the options-general.php page with curtain parameters to toggle maintenance mode without valid nonce validation.

The Curtain WordPress plugin through 1.0.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks when the unfiltered_html capability is disallowed