Shopware is an open source eCommerce platform. Versions prior to 6.3.5.1 may leak of information via Store-API. The vulnerability could only be fixed by changing the API system, which involves a non-backward-compatible change. Only consumers of the Store-API should be affected by this change. We recommend to update to the current version 6.3.5.1. You can get the update to 6.3.5.1 regularly via the Auto-Updater or directly via the download overview. https://www.shopware.com/en/download/#shopware-6 The vulnerability could only be fixed by changing the API system, which involves a non-backward-compatible change. Only consumers of the Store-API should be affected by this change. Please check your plugins if you have it in use. Detailed technical information can be found in the upgrade information. https://github.com/shopware/platform/blob/v6.3.5.1/UPGRADE-6.3.md#6351 ### Workarounds For older versions of 6.1 and 6.2, corresponding security measures are also available via a plugin. 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 ### For more information https://docs.shopware.com/en/shopware-6-en/security-updates/security-update-02-2021