Denial of Service vulnerability in PowerDNS
CVE-2026-33260

5.3MEDIUM

Key Information:

Vendor

Powerdns

Status
Authoritative
Dnsdist
Recursor
Vendor
CVE Published:
22 April 2026

What is CVE-2026-33260?

A vulnerability has been detected in PowerDNS products where an attacker is able to send a crafted web request that triggers unlimited memory allocation in the internal web server. This can lead to a denial of service condition, affecting the availability of the service. It is important to note that the internal web server is disabled by default, reducing the immediate risk, but it is still crucial for users to remain vigilant and implement appropriate safeguards.

Affected Version(s)

Authoritative 5.0.0 < 5.0.4

Authoritative 4.9.0 < 4.9.14

DNSdist 1.9.0 < 1.9.13

References

https://docs.powerdns.com/authoritative/security-advisori...
https://www.dnsdist.org/security-advisories/powerdns-advi...
https://docs.powerdns.com/recursor/security-advisories/po...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cavid
.