CVE-2026-40305: DNN has Force Friend Request Acceptance

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-17 · updated 2026-10-26
Weakness: CWE-285

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 6.0.0 and prior to version 10.2.2, in the friends feature, a user could craft a request that would force the acceptance of a friend request on another user. Version 10.2.2 patches the issue.

Affected products

DotNetNuke CMS Fixed in 9.1.1: from 6.0.0 before 10.2.2 — fixed in 10.2.2

How to fix

Upgrade to a fixed version: DotNetNuke CMS Fixed in 9.1.1 10.2.2. Check the vendor advisory for mitigations.

References

https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-fpj4-9qhx-5m6m

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