Description
An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.
Published: 2026-06-25
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6367-1 dnsdist security update
History

Thu, 25 Jun 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Powerdns
Powerdns dnsdist
Vendors & Products Powerdns
Powerdns dnsdist

Thu, 25 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Thu, 25 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Thu, 25 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-116
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 25 Jun 2026 13:00:00 +0000

Type Values Removed Values Added
Description An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.
Title Prometheus denial of service via crafted DNS queries
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Subscriptions

Powerdns Dnsdist
cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published:

Updated: 2026-06-25T13:23:46.840Z

Reserved: 2026-04-08T09:59:59.341Z

Link: CVE-2026-40011

cve-icon Vulnrichment

Updated: 2026-06-25T13:23:04.450Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T22:00:12Z

Weaknesses