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Vulnerabilities

Vulnerability · CVE-2026-6667

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command.

Published May 9, 2026 · catalog updated Jul 24, 2026 · PgBouncer before 1.25.2 did

Check if you run it

No confirmed exploitation is on record for CVE-2026-6667. EPSS is 0.33%. Act only if a listed version of PgBouncer before 1.25.2 did is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (PgBouncer before 1.25.2 did).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.33%
Remediation
Not established
Affected products
cpe pgbouncer/pgbouncer

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe pgbouncer/pgbouncerversion unspecified

How to fix CVE-2026-6667

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-6667. EPSS is 0.33%. Act only if a listed version of PgBouncer before 1.25.2 did is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-862: Missing Authorization. EPSS 0.33%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 9, 2026 · NIST NVD

    Detected

    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.

  2. Jul 24, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-6667

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-6667

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-6667

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.