CVE-2026-33595
Medium
Description
A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection.
SeverityMedium
CVSS5.3
Exploit probability—
ProductPowerdns Dnsdist
PublishedApr 22, 2026
First seenApr 22, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- powerdns dnsdist1.9.13, 2.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| powerdns dnsdist | 1.9.0 ≤ v < 1.9.13, 2.0.0 ≤ v < 2.0.4 | 1.9.13, 2.0.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.