CVE-2017-15227: Irssi

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

Irssi before 1.0.5, while waiting for the channel synchronisation, may incorrectly fail to remove destroyed channels from the query list, resulting in use-after-free conditions when updating the state later on.

Affected products

• Irssi Irssi: up to and including 1.0.4

Published 2017-10-22. Last modified 2026-06-17.