CVE-2026-40011
Fixed in a distro release EPSS <1%CVSS 3.7
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.
Products: powerdns dnsdist
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | dnsdist | no fix |
| Debian 13 | dnsdist | 1.9.15-0+deb13u1 |
| Debian 14 | dnsdist | 2.1.0-1 |
| SUSE Linux Enterprise Server 16.0 | dnsdist | 1.9.15-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | dnsdist | 1.9.15-160000.1.1 |
| Ubuntu 16.04 LTS | dnsdist | no fix |
| Ubuntu 25.10 | dnsdist | no fix |
| Ubuntu 26.04 LTS | dnsdist | no fix |
| Ubuntu 26.10 | dnsdist | no fix |
| Ubuntu Pro 18.04 LTS | dnsdist | no fix |
| Ubuntu Pro 20.04 LTS | dnsdist | no fix |
| Ubuntu Pro 22.04 LTS | dnsdist | no fix |
| Ubuntu Pro 24.04 LTS | dnsdist | no fix |
| openSUSE Leap 16.0 | dnsdist | 1.9.15-160000.1.1 |
| openSUSE Tumbleweed | dnsdist | 2.0.7-1.1 |