CVE-2026-40011
Low
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.
SeverityLow
CVSS3.7
Exploit probability—
ProductDNSdist
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-116CWE-116
How to fix
Update
- PowerDNS DNSdist1.9.15, 2.0.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| PowerDNS DNSdist | 1.9.0 ≤ v < 1.9.15, 2.0.0 ≤ v < 2.0.7 | 1.9.15, 2.0.7 |
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