CVE-2017-5668: Bitlbee

Critical severity, CVSS 9.8. EPSS: 3% chance of exploitation in the next 30 days.

bitlbee-libpurple before 3.5.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a file transfer request for a contact that is not in the contact list. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-10189.

Affected products

• Bitlbee Bitlbee: up to and including 3.4.2
• Bitlbee Bitlbee-Libpurple: up to and including 3.5

Published 2017-03-14. Last modified 2026-06-17.