Points and Rewards for WooCommerce <= 2.10.1 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Modification via Multiple AJAX Actions

The Points and Rewards for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.10.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to convert and drain any user's reward points into wallet balance, exfiltrate all users' emails and point balances to an attacker-controlled Klaviyo account, overwrite the site's Klaviyo public API key, block or unblock arbitrary users from the points system, and modify campaign banner and heading settings. The nonce used for authentication of these requests (wps-wpr-verify-nonce) is injected into every public-facing page via wp_localize_script(), and the wps_wpr_generate_custom_wallet handler is additionally registered on the wp_ajax_nopriv_ hook, meaning unauthenticated visitors can also obtain a valid nonce and exploit that specific action.