Vulnerability record · CVE-2025-59535 · published 22 September 2025

CVE-2025-59535: Dnnsoftware dotnetnuke improper input validation vulnerability

DDnnsoftware · Dotnetnuke

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, arbitrary themes can be loaded through query parameters. If an installed theme had a vulnerability, even if it was not used on any page, this could be loaded on unsuspecting clients without knowledge of the site owner. This issue has been patched in version 10.1.0.

6.5 CVSS 3.1 Medium EPSS 0.43% · top 65.4% CWE-20 · Improper input validationCWE-200 · Information exposure

6.5CVSS 3.1 base score

0.43%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

DDotnetnuke Dnnsoftware

References

Link	Tags
https://github.com/dnnsoftware/Dnn.Platform/blob/develop/DNN%20Platform/Library/UI/Skins/Skin.cs#L305	Product
https://github.com/dnnsoftware/Dnn.Platform/commit/72f30f69fd2214d77f6c2577dfcca495a24caf5c	Patch
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-wq2j-w9pm-7x2p	Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-59535), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.