CVE-2026-40011

Published: Jun 25, 2026Modified: Jun 25, 2026Deferred

3.7

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitability: 2.2 / Impact: 1.4

Source: security@open-xchange.com (Secondary)

Description

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.

Related CWEs

CWE-116

Improper Encoding or Escaping of Output

The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

References (1)

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html

Source: security@open-xchange.com

Timeline

No history available yet.