Irssi before 1.0.8, 1.1.x before 1.1.3, and 1.2.x before 1.2.1, when SASL is enabled, has a use after free when sending SASL login to the server.
https://usn.ubuntu.com/4046-1/
https://seclists.org/bugtraq/2019/Jun/41
https://irssi.org/security/irssi_sa_2019_06.txt
https://github.com/irssi/irssi/commit/d23b0d22cc611e43c88d99192a59f413f951a955
http://www.securityfocus.com/bid/108998
http://www.openwall.com/lists/oss-security/2019/06/29/1
http://packetstormsecurity.com/files/153480/Slackware-Security-Advisory-irssi-Updates.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00004.html