The Ultimate Gift Cards for WooCommerce WordPress plugin before 3.2.10 does not reconcile the value of the gift card coupon it issues against the amount actually collected at checkout, allowing unauthenticated users to obtain store credit worth more than they paid.

The Ultimate Gift Cards for WooCommerce – Create WooCommerce Gift Cards, Gift Vouchers, Redeem & Manage Digital Gift Coupons. Offer Gift Certificates, Schedule Gift Cards, and Use Advance Coupons With Personalized Templates plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on several REST API endpoints such as /wp-json/gifting/recharge-giftcard in all versions up to, and including, 3.0.6. This makes it possible for unauthenticated attackers to recharge a gift card balance, without making a payment along with reducing gift card balances without purchasing anything.