begin here :
https://bitcointalk.org/index.php?topic=5352784.0
then here:
https://bitcointalk.org/index.php?topic=5352784.0
And i you don't want to read all social, you can go here :
https://github.com/spesmilo/electrum/security/advisories/GHSA-9gpc-prj9-89x7
my exp was like this one :
https://github.com/spesmilo/electrum/issues/8419
