# CVE-2026-33599

> Vulnerability · severity: **LOW** (CVSS 3.1).

## Description

A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default.

## Key facts

- **CVE ID:** CVE-2026-33599
- **Published:** 2026-04-22
- **CVSS severity:** LOW
- **CVSS base score:** 3.1
- **CWE codes:** CWE-125

## Affected products

- `powerdns:dnsdist`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33599

## Citation

> AI Analytics. CVE-2026-33599. Retrieved 2026-07-19 from https://api.ai-analytics.org/cve/CVE-2026-33599. Derived from NIST NVD. Licensed CC0.

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