Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository
### Impact
The translation memory API exposed unintended endpoints, which in turn didn't do proper access control.
### Patches
*
https://github.com/WeblateOrg/weblate/pull/18516
### Workarounds
The CDN add-on is not enabled by default.
### References
Thanks to @spbavarva for reporting this responsibly via GitHub.