Contact Form 7 + Telegram < 0.8.6 - Missing Authorization to Authenticated (Subscriber+) Subscription Approve/Pause/Refuse

Description

The Contact Form 7 + Telegram plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the 'wpcf7_Telegram::ajax' function in versions up to, and including, 0.8.5. This makes it possible for authenticated attackers, with subscriber-level access and above, to approve, pause and refuse subscriptions.