# DNN DotNetNuke.Core insecure XML processing and weak cryptography

Source: https://junglewise.ai/threats/dnn-dotnetnuke-core-insecure-xml-processing-and-weak-cryptography-fd6489d4  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-14. Updated: 2026-05-11  
License: CC BY 4.0 with a link back

Severity: low · CVSS 0 · Published 2026-04-14

DotNetNuke (DNN) is a content management system used to build and manage websites. This update addresses several security-related code issues that could potentially allow attackers to interfere with how the system processes data or weaken the protection of sensitive information. While the risk is considered low, updating ensures the platform uses modern security standards for data handling and encryption.

Technologies: [DotNetNuke.Core (NuGet)](https://junglewise.ai/threats/technologies/dotnetnuke-core). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 0, published 14 April 2026.

**Which products and versions are affected?** DotNetNuke.Core (NuGet) >= 6.0.0, < 10.2.2.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is This vulnerability attacked?** It is attacked over the network, in a software library.

**Am I affected?** Check whether you run DotNetNuke.Core (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The DotNetNuke.Core codebase triggered several .NET security code analysis rules (CA3075, CA5366, CA5371, CA5368, CA5369, CA5372, CA5379, CA5350, and CA5351). The majority of these violations relate to insecure XML processing, specifically the failure to disable Document Type Definition (DTD) processing, which can lead to XML External Entity (XXE) vulnerabilities. Additionally, the rules identified the use of broken or weak cryptographic algorithms (such as SHA-1 or MD5). An attacker could potentially exploit these weaknesses to perform unauthorized data disclosure or bypass certain security controls. The issues are resolved in version 10.2.2 by enforcing safer XML defaults and updating cryptographic implementations.

## Affected products

- DNN Software DotNetNuke.Core >= 6.0.0, < 10.2.2

## Timeline

- 2026-04-13: disclosed: Advisory published by maintainers
- 2026-04-14: advisory: GitHub Advisory reviewed and published

## References

- [https://api.github.com/users/bdukes](https://api.github.com/users/bdukes)
- [https://github.com/bdukes](https://github.com/bdukes)
- [https://api.github.com/users/bdukes/gists%7B/gist_id%7D](https://api.github.com/users/bdukes/gists%7B/gist_id%7D)
- [https://api.github.com/users/bdukes/repos](https://api.github.com/users/bdukes/repos)
- [https://avatars.githubusercontent.com/u/59507?v=4](https://avatars.githubusercontent.com/u/59507?v=4)
- [https://api.github.com/users/bdukes/events%7B/privacy%7D](https://api.github.com/users/bdukes/events%7B/privacy%7D)

## Related threats

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- [DNN: Same HostGUID for all new installs](https://junglewise.ai/threats/cve-2026-40306-dnn-same-hostguid-for-all-new-installs)
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- [DotNetNuke.Core Vulnerable to Stored XSS in Module Deletion Confirmation Modal](https://junglewise.ai/threats/cve-2026-24837-dotnetnuke-core-vulnerable-to-stored-xss-in-module-deletion)