CVE-2026-6667

Name: CVE-2026-6667
Creator: NVD / NIST
Published: 2026-05-09T01:16:09.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2026-6667 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.29%

20.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Pgbouncer	Pgbouncer	< 1.25.2

References

https://www.pgbouncer.org/changelog.html#pgbouncer-125xRelease Notes

Timeline

Published: May 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6667?

How severe is CVE-2026-6667?

CVE-2026-6667 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6667?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6667?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST