# CVE-2026-40306

> Vulnerability · severity: **MEDIUM** (CVSS 6.5).

## Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. All new installations of DNN 10.x.x - 10.2.1 have the same Host GUID. This does not affect upgrades from 9.x.x. Version 10.2.2 patches the issue.

## Key facts

- **CVE ID:** CVE-2026-40306
- **Published:** 2026-04-17
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.5
- **CWE codes:** CWE-330

## Affected products

- `dnnsoftware:dotnetnuke`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40306

## Citation

> AI Analytics. CVE-2026-40306. Retrieved 2026-07-18 from https://api.ai-analytics.org/cve/CVE-2026-40306. Derived from NIST NVD. Licensed CC0.

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