CVE-2026-40011

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.

CVSS Vector

References

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