Vulnerability DatabaseCVE-2026-40011
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CVE-2026-40011
Published:June 25, 2026
Updated:June 29, 2026
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.
Affected Packages
https://github.com/PowerDNS/pdns.git (GITHUB):
Affected version(s) >=dnsdist-2.0.0 <dnsdist-2.0.7
Fix Suggestion:
Update to version dnsdist-2.0.7
https://github.com/PowerDNS/pdns.git (GITHUB):
Affected version(s) >=dnsdist-1.0.0 <dnsdist-1.9.15
Fix Suggestion:
Update to version dnsdist-1.9.15
Related Resources (1)
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Encoding or Escaping of Output
CWE-116
EPSS
Base Score:
0.16