When the channel topic is set without specifying a sender, irssi before 1.0.6 may dereference a NULL pointer.
When the channel topic is set without specifying a sender, irssi before 1.0.6 may dereference a NULL pointer.
https://irssi.org/security/irssi_sa_2018_01.txt https://github.com/irssi/irssi/commit/54d453623d879ea83d0818a80bd14151192953ec