CVE•Published 2026-04-17•Modified 2026-04-24•0 articles on news•5 live references•NVD data

CVE-2026-40306Dnnsoftware · Dotnetnuke

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-330Use of Insufficiently Random Values

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.

Timeline

Published 2026-04-17

Modified 2026-04-24

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-40306

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Dnnsoftware Dotnetnuke"

All exposed Dnnsoftware Dotnetnuke instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Dotnetnuke"

HTTP body or banner mentions "Dotnetnuke" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-40306