CVE-2019-25544: Pidgin

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.

Affected products

• Pidgin Pidgin: version 2.13.0 only

Published 2026-03-21. Last modified 2026-06-17.