CVE-2009-1889: Pidgin

Medium severity, CVSS 5.0. EPSS: 3.4% chance of exploitation in the next 30 days.

The OSCAR protocol implementation in Pidgin before 2.5.8 misinterprets the ICQWebMessage message type as the ICQSMS message type, which allows remote attackers to cause a denial of service (application crash) via a crafted ICQ web message that triggers allocation of a large amount of memory.

Affected products

• Pidgin Pidgin: up to and including 2.5.7; 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 2009-07-01. Last modified 2026-06-16.