Prometheus denial of service via crafted DNS queries_CVE-2026-40011

3.7 / 10

LOW

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

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.

Basic Information

ID CVE-2026-40011

Source OX

Published Jun 25, 2026 at 12:22

Modified Jun 25, 2026 at 13:23

Affected Product

Vendor PowerDNS

Product DNSdist

Version 1.9.0

Affected Versions PowerDNS DNSdist 1.9.0
PowerDNS DNSdist 2.0.0

CWE Classification

CWE-116

References

www.dnsdist.org /security-advisories/powerdns-advisory-for-dnsdist-2026-09.html

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    "published": "2026-06-25T12:22:19.248Z",
    "modified": "2026-06-25T13:23:46.840Z",
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