CVE-2015-4054: Pgbouncer

High severity, CVSS 7.5. EPSS: 4.1% chance of exploitation in the next 30 days.

PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.

Affected products

• Pgbouncer Pgbouncer: up to and including 1.5.4

Published 2017-05-23. Last modified 2026-06-17.