CVE-2026-6667

PgBouncer missing authorization check in KILL_CLIENT admin command

Published May 9, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Pgbouncer
Pgbouncer pgbouncer
Vendors & Products Pgbouncer
Pgbouncer pgbouncer
Type Values Removed Values Added
Description 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.
Title PgBouncer missing authorization check in KILL_CLIENT admin command
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
PostgreSQL
Published
Updated
May 11, 2026, 2:44 PM
Reserved
Apr 20, 2026, 12:25 PM
Status
Analyzed
Published
May 9, 2026, 1:16 AM
Modified
Jul 24, 2026, 8:10 AM