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CVE-2026-40306

DNN has same HostGUID for all new installs

Published: Apr 17, 2026Updated: Apr 24, 2026 Sources: CVE List NVDCWE-330
6.5MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 92.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-330

Affected Products

Dnn.Platformdnnsoftware
On-premWeb App
Web & CMS Plugins / cms-core
dotnetnukednnsoftware
On-premWeb App
Web & CMS Plugins / cms-core
dnnsoftwarecommercialWeb & CMS Pluginsaka dotnetnuke, dnn.platform, dnn platform

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2rhw-gw3f-477j
github.com
https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2
github.com

Timeline

Published
Apr 17, 2026
Last Updated
Apr 24, 2026

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