GHSA-prg5-hg25-8grq

### Impact

This vulnerability gives the ability to switch channels via the `_channel_code` GET parameter in production environments. This was meant to be enabled only when `%kernel.debug%` is set to true.

However, if no `sylius_channel.debug` is set explicitly in the configuration, the default value which is `%kernel.debug%` will be not resolved and cast to boolean, enabling this debug feature even if that parameter is set to false.

### Patches

Patch has been provided for Sylius 1.3.x and newer - **1.3.16, 1.4.12, 1.5.9, 1.6.5**. Versions older than 1.3 are not covered by our security support anymore.

### Workarounds

Unsupported versions could be patched by adding the following configuration to run in production:

```yaml
sylius_channel:
debug: false
```