---
id: CVE-2026-0397
title: >-
  When the internal webserver is enabled (default is disabled), an attacker
  might be able to trick an administrator logged to the dashboard into visiting
  a malicious website and extract information about the running configuration
  from the …
summary: >-
  When the internal webserver is enabled (default is disabled), an attacker
  might be able to trick an administrator logged to the dashboard into visiting
  a malicious website and extract information about the running configuration
  from the …
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N'
cwe:
  - CWE-942
vendor: powerdns
product: dnsdist
affected:
  - 'dnsdist >= 1.9.0, < 1.9.12'
  - 'dnsdist >= 2.0.0, < 2.0.3'
patched:
  - dnsdist 2.0.3
published: '2026-03-31'
updated: '2026-07-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-0397'
references:
  - url: >-
      https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html
    label: security@open-xchange.com
tags:
  - nvd
epss: 0.00161
epssPercentile: 0.05681
ingestedAt: '2026-07-25T10:53:53.117Z'
---

## Overview

When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.

## Affected

- `dnsdist >= 1.9.0, < 1.9.12`
- `dnsdist >= 2.0.0, < 2.0.3`

## Remediation

Upgrade past the affected range:

- `dnsdist 2.0.3`