An issue was discovered in OXID eShop Enterprise Edition before 5.3.8, 6.0.x before 6.0.3, and 6.1.x before 6.1.0; Professional Edition before 4.10.8, 5.x and 6.0.x before 6.0.3, and 6.1.x before 6.1.0; and Community Edition before 4.10.8, 5.x and 6.0.x before 6.0.3, and 6.1.x before 6.1.0. An attacker could gain access to the admin panel or a customer account when using the password reset function. To do so, it is required to own a domain name similar to the one the victim uses for their e-mail accounts.

OXID eShop Community Edition before 6.0.0 RC2 (development), 4.10.x before 4.10.5 (maintenance), and 4.9.x before 4.9.10 (legacy), Enterprise Edition before 6.0.0 RC2 (development), 5.2.x before 5.2.10 (legacy), and 5.3.x before 5.3.5 (maintenance), and Professional Edition before 6.0.0 RC2 (development), 4.9.x before 4.9.10 (legacy) and 4.10.x before 4.10.5 (maintenance) allow remote attackers to hijack the cart session of a client via Cross-Site Request Forgery (CSRF) if the following pre-conditions are met: (1) the attacker knows which shop is presently used by the client, (2) the attacker knows the exact time when the customer will add product items to the cart, (3) the attacker knows which product items are already in the cart (has to know their article IDs), and (4) the attacker would be able to trick user into clicking a button (submit form) of an e-mail or remote site within the period of visiting the shop and placing an order.

OXID eShop Community Edition before 6.0.0 RC3 (development), 4.10.x before 4.10.6 (maintenance), and 4.9.x before 4.9.11 (legacy), Enterprise Edition before 6.0.0 RC3 (development), 5.2.x before 5.2.11 (legacy), and 5.3.x before 5.3.6 (maintenance), and Professional Edition before 6.0.0 RC3 (development), 4.9.x before 4.9.11 (legacy) and 4.10.x before 4.10.6 (maintenance) allow remote attackers to crawl specially crafted URLs (aka "forced browsing") in order to overflow the database of the shop and consequently make it stop working. Prerequisite: the shop allows rendering empty categories to the storefront via an admin option.

An issue was discovered in OXID eShop Enterprise Edition before 5.3.7 and 6.x before 6.0.1. By entering specially crafted URLs, an attacker is able to bring the shop server to a standstill and hence, it stops working. This is only valid if OXID High Performance Option is activated and Varnish is used.