CVE-2026-6667 Details
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.
An authorization bypass vulnerability has been identified in PgBouncer versions prior to 1.25.2, allowing all users with access to the administration console to execute the KILL_CLIENT command. This command, which terminates client connections, should only be available to users specified in the admin_users parameter. The vulnerability arises from the application's failure to properly restrict access to the command based on user privileges.
Users can upgrade to PgBouncer version 1.25.2 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 11, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.pgbouncer.org/changelog.html#pgbouncer-125x | PostgreSQL | Release Notes |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | PostgreSQL |
Affected Products
| Product | Versions |
|---|---|
| pgbouncer pgbouncer | < 1.25.2 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | PostgreSQL |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 9, 2026 | New CVE Received | PostgreSQL |