Web Content Management Platform Vulnerability in DNN by DNN Software
CVE-2026-40306

6.9MEDIUM

Key Information:

Vendor

Dnnsoftware

Status
Dnn.platform
Vendor
CVE Published:
17 April 2026

What is CVE-2026-40306?

The vulnerability in DNN, an open-source web content management platform, arises from all new installations of version 10.0.x to 10.2.1 sharing the same Host GUID. This flaw does not impact upgrades from earlier versions like 9.x.x. This shared Host GUID can expose installations to potential risks, making it imperative for users to upgrade to version 10.2.2, which addresses and mitigates this issue. For detailed guidance, visit the official advisory and the release notes.

Affected Version(s)

Dnn.Platform >= 10.0.0, < 10.2.2

References

https://github.com/dnnsoftware/Dnn.Platform/security/advi...
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https://github.com/dnnsoftware/Dnn.Platform/releases/tag/...
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CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.