CVE-2011-1091: Pidgin

Medium severity, CVSS 4.0. EPSS: 2.6% chance of exploitation in the next 30 days.

libymsg.c in the Yahoo! protocol plugin in libpurple in Pidgin 2.6.0 through 2.7.10 allows (1) remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG notification packet, and allows (2) remote Yahoo! servers to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG SMS message.

Affected products

• Pidgin Pidgin: version 2.6.0 only; version 2.6.1 only; version 2.6.2 only; version 2.6.4 only; version 2.6.5 only; version 2.6.6 only; …

Published 2011-03-14. Last modified 2026-06-16.