New irssi packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues.

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/irssi-1.0.7-i586-1_slack14.2.txz: Upgraded.
This update fixes bugs and security issues.
For more information, see:
https://irssi.org/security/html/irssi_sa_2018_02
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7054
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7053
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7050
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7052
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7051
(* Security fix *)
+--------------------------+


Where to find the new packages:
+-----------------------------+

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project!

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/irssi-1.0.7-i486-1_slack14.0.txz

Updated package for Slackware x86_64 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/irssi-1.0.7-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/irssi-1.0.7-i486-1_slack14.1.txz

Updated package for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/irssi-1.0.7-x86_64-1_slack14.1.txz

Updated package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/irssi-1.0.7-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/irssi-1.0.7-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/irssi-1.1.1-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/irssi-1.1.1-x86_64-1.txz


MD5 signatures:
+-------------+

Slackware 14.0 package:
ce82a4f6d8aaf4632806db2893ddb0dc irssi-1.0.7-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
7d2662e155e742960bec814286e9f58b irssi-1.0.7-x86_64-1_slack14.0.txz

Slackware 14.1 package:
0645709121b1a3eefdc3095e391cdb61 irssi-1.0.7-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
92777560bb95c264bf7e79159bd5df47 irssi-1.0.7-x86_64-1_slack14.1.txz

Slackware 14.2 package:
7ddcebf68d020dd1ca71306724746bea irssi-1.0.7-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
dc60362b6999b0ef91b1f5e1517f1973 irssi-1.0.7-x86_64-1_slack14.2.txz

Slackware -current package:
bca5b4b7d5388d8dead5f262f3ee641d n/irssi-1.1.1-i586-1.txz

Slackware x86_64 -current package:
453cf7794998cb384de19f638cd741f2 n/irssi-1.1.1-x86_64-1.txz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg irssi-1.0.7-i586-1_slack14.2.txz

  Irssi (SSA:2018-046-01) Update for Slackware