CVE-2011-4601: Pidgin

Medium severity, CVSS 5.0. EPSS: 4.5% chance of exploitation in the next 30 days.

family_feedbag.c in the oscar protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted (1) AIM or (2) ICQ message associated with buddy-list addition.

Affected products

• Pidgin Pidgin: up to and including 2.10.0; version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.1.0 only; version 2.1.1 only; …

Published 2011-12-25. Last modified 2026-06-16.