CVE-2026-6664: Pgbouncer

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet.

Affected products

• Pgbouncer Pgbouncer: before 1.25.2 (fixed in 1.25.2)

Published 2026-05-09. Last modified 2026-07-24.