CVE-2021-21263

Laravel is a web application framework. Versions of Laravel before 6.20.11,
7.30.2 and 8.22.1 contain a query binding exploitation. This same exploit
applies to the illuminate/database package which is used by Laravel. If a
request is crafted where a field that is normally a non-array value is an
array, and that input is not validated or cast to its expected type before
being passed to the query builder, an unexpected number of query bindings
can be added to the query. In some situations, this will simply lead to no
results being returned by the query builder; however, it is possible
certain queries could be affected in a way that causes the query to return
unexpected results.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980095&gt;