CVE-2017-10966: Irssi

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

An issue was discovered in Irssi before 1.0.4. While updating the internal nick list, Irssi could incorrectly use the GHashTable interface and free the nick while updating it. This would then result in use-after-free conditions on each access of the hash table.

Affected products

• Irssi Irssi: up to and including 1.0.3

Published 2017-07-07. Last modified 2026-06-17.