Webcache Poisoning in shopware/platform and shopware/core
### Impact
Webcache Poisoning via X-Forwarded-Prefix and sub-request
### Patches
We recommend updating to the current version 6.4.6.1. You can get the update to 6.4.6.1 regularly via the Auto-Updater or directly via the download overview.
https://www.shopware.com/en/download/#shopware-6
Workarounds
For older versions of 6.1, 6.2, and 6.3, 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