CVE-2026-6667
PgBouncer missing authorization check in KILL_CLIENT admin command
4.3
MEDIUM
CVSS 3.1
EPSS 0.01%
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.
How to fix CVE-2026-6667
To remediate CVE-2026-6667, upgrade the affected package to a fixed version below.
- —upgrade to 1.25.2 or later
- —no fix listed
Is CVE-2026-6667 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.25.2
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |