Allocation of Resources Without Limits or Throttling in PowerDNS Authoritative - CVE-2026-42005
Published: June 25, 2026 / Updated: June 25, 2026
Vulnerability identifier: #VU135238
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-42005
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Authoritative
PowerDNS Authoritative
Detailed vulnerability description
The vulnerability allows a remote client to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the internal web server when handling crafted HTTP queries. A remote client can send a crafted HTTP request to cause a denial of service.
The issue can only be triggered if the internal web server is enabled, and the internal web server is disabled by default.
How to mitigate CVE-2026-42005
Install security update from vendor's website.