CVE-2026-40306

EUVD-2026-23556
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 12%
Affected Products (NVD)
VendorProductVersion
dnnsoftwaredotnetnuke
10.0.0 ≤
𝑥
< 10.2.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2rhw-gw3f-477j