Vulnerability-Lookup

CVE-2026-6667 (GCVE-0-2026-6667)

Vulnerability from cvelistv5 – Published: 2026-05-09 00:43 – Updated: 2026-05-11 14:44

Title

PgBouncer missing authorization check in KILL_CLIENT admin command

Summary

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.

Severity ?

4.3 (Medium)


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

CWE

CWE-862 - Missing Authorization

Assigner

PostgreSQL

References

1 reference

URL	Tags
https://www.pgbouncer.org/changelog.html#pgbouncer-125x

Impacted products

1 product

Vendor	Product	Version
n/a	PgBouncer	Affected: 0 , < 1.25.2 (semver)

Credits

Thanks to HarutoKimura for finding and reporting this problem.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-6667

Vulnerability from fkie_nvd - Published: 2026-05-09 01:16 - Updated: 2026-05-09 01:16

Severity ?

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	f86ef6dc-4d3a-42ad-8f28-e6d5547a5007	https://www.pgbouncer.org/changelog.html#pgbouncer-125x

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-6667",
  "lastModified": "2026-05-09T01:16:09.287",
  "metrics": {
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  "vulnStatus": "Received",
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          "value": "CWE-862"
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      "type": "Secondary"
    }
  ]
}

GHSA-GC77-JRV9-6FJP

Vulnerability from github – Published: 2026-05-09 03:31 – Updated: 2026-05-09 03:31

Details

Severity ?

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-6667"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-09T01:16:09Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-gc77-jrv9-6fjp",
  "modified": "2026-05-09T03:31:22Z",
  "published": "2026-05-09T03:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6667"
    },
    {
      "type": "WEB",
      "url": "https://www.pgbouncer.org/changelog.html#pgbouncer-125x"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-6667

Vulnerability from csaf_microsoft - Published: 2026-05-02 00:00 - Updated: 2026-05-10 01:01

Summary

PgBouncer missing authorization check in KILL_CLIENT admin command

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-6667

CWE-862 - Missing Authorization

Affected products

Under investigation 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 17084-1		—

References

4 references

URL	Category
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-6667 PgBouncer missing authorization check in KILL_CLIENT admin command - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-6667.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "PgBouncer missing authorization check in KILL_CLIENT admin command",
    "tracking": {
      "current_release_date": "2026-05-10T01:01:32.000Z",
      "generator": {
        "date": "2026-05-10T07:07:16.839Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-6667",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-10T01:01:32.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-6667",
      "cwe": {
        "id": "CWE-862",
        "name": "Missing Authorization"
      },
      "notes": [
        {
          "category": "general",
          "text": "PostgreSQL",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "under_investigation": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-6667 PgBouncer missing authorization check in KILL_CLIENT admin command - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-6667.json"
        }
      ],
      "title": "PgBouncer missing authorization check in KILL_CLIENT admin command"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-6667 (GCVE-0-2026-6667)

FKIE_CVE-2026-6667

GHSA-GC77-JRV9-6FJP

MSRC_CVE-2026-6667

Tags

Sightings

Nomenclature