In this security release, we have been able to close security gaps of the threat level "low" and "medium" in addition to the usual error corrections and optimizations. Affected are the Shopware versions from 6.1.0 up to and including 6.3.4.0. The following vulnerability has been fixed with this security update:
NEXT-12359: Information exposure via query strings in URL
NEXT-9689: Authenticated Server Side Request Forgery
NEXT-12230: Authenticated Privilege Escalation
We recommend to update to the current version 6.3.4.1. You can get the update to 6.3.4.1 regularly via the Auto-Updater or directly via the download overview.
https://www.shopware.com/en/download/#shopware-6
For older versions of 6.1 and 6.2, corresponding security measures are also available via a plugin. However, these do not include the full range of functions in the area of subsequent processing of orders that were created via a guest account, but only prevent misuse by deactivating the function. For the full range of functions, we recommend updating to the latest Shopware version.
https://store.shopware.com/en/detail/index/sArticle/518463/number/Swag136939272659