It's not fixed yet,:
Hours after we were sent the screenshot, we silently made mitigations in 5248613 and 5dc240d; and released 3.3.2. This is not a true fix, but the more proper fix of using error codes would entail upgrading the whole federated server ecosystem out there...
We did not publicly disclose this until now, as around the time of the 3.3.2 release, the attacker stopped; however they now started the attack again.
So latest version of Electrum is still 3.3.2
https://electrum.org/#download and this attack is still possible, only change is how it is display to users now. I must admit that this is something that what was never supposed to happen, cheap trick for for naive users. Download Electrum only from official site, and even then check and verify files.
Do not download any update for Electrum, even if you get warning from legit Electrum wallet, it is expolit that hacker use to get your seed/private keys!