Weblate didn't correctly sanitize some arguments passed to Git and Mercurial, which allowed changing their behavior in an unintended way.
The issues were fixed in the 4.11.1 release. The following commits are addressing it:
Instances in which untrusted users cannot create new components are not affected.
If you have any questions or comments about this advisory: * Open a topic in discussions * Email us at care@weblate.org