CVE-2026-33257
Medium
Description
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
SeverityMedium
CVSS5.3
Exploit probability—
ProductPowerdns Authoritative
PublishedApr 22, 2026
First seenApr 22, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- powerdns authoritative4.9.14, 5.0.4 or later
- powerdns dnsdist1.9.13, 2.0.4 or later
- powerdns recursor5.2.9, 5.3.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| powerdns authoritative | 4.9.0 ≤ v < 4.9.14, 5.0.0 ≤ v < 5.0.4 | 4.9.14, 5.0.4 |
| powerdns dnsdist | 1.9.0 ≤ v < 1.9.13, 2.0.0 ≤ v < 2.0.4 | 1.9.13, 2.0.4 |
| powerdns recursor | 5.2.0 ≤ v < 5.2.9, 5.3.0 ≤ v < 5.3.6, 5.4.0 | 5.2.9, 5.3.6 |
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