CVE Catalog
CVE-2026-6667
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk0.29%
21th percentile - higher than 21% of all known CVEs
Summary
PgBouncer before 1.25.2 did not properly authorize the KILL_CLIENT admin command. Any user with access to the admin console could run it, instead of only users in the admin_users list.
Risk Assessment
Unauthorized admin console users can kill client connections, causing application disruption.
Recommendation
Update PgBouncer to version 1.25.2 or later.
Original NVD description (English source)
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.