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-1.0.6-i586-1_slack14.2.txz: Upgraded.
This update fixes multiple security vulnerabilities.
For more information, see:
https://irssi.org/security/irssi_sa_2018_01.txt
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5205
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5206
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5207
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5208
(* 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-1.0.6-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-1.0.6-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/irssi-1.0.6-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-1.0.6-x86_64-1_slack14.1.txz

Updated package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/irssi-1.0.6-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-1.0.6-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/irssi-1.0.6-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/irssi-1.0.6-x86_64-1.txz


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

Slackware 14.0 package:
f8ed890e54c7464618616b2ae95724af irssi-1.0.6-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
10a12607dfac6b996442f7463f4e7342 irssi-1.0.6-x86_64-1_slack14.0.txz

Slackware 14.1 package:
51e380c175ec41a6cb947a2c0b3e7d7a irssi-1.0.6-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
271e3af4c64640b778f94e2612bfb477 irssi-1.0.6-x86_64-1_slack14.1.txz

Slackware 14.2 package:
5692a612b1c90f7c9724296adc04404f irssi-1.0.6-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
2433d5d8ac7570e95b3804a99e6cf06b irssi-1.0.6-x86_64-1_slack14.2.txz

Slackware -current package:
cf4e27ad7ba625ee4bf230712e371070 n/irssi-1.0.6-i586-1.txz

Slackware x86_64 -current package:
d7adea982f907b4e5ec83f52b4b73d7d n/irssi-1.0.6-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg irssi-1.0.6-i586-1_slack14.2.txz

  Irssi (SSA:2018-008-01) Update for Slackware