CVE-2026-6667: Pgbouncer

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command. All users with access to the administration console (which itself requires authorization) could run this command. It would have been correct to allow only users listed in the admin_users parameter.

Affected products

• Pgbouncer Pgbouncer: before 1.25.2 (fixed in 1.25.2)

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