Medium severity · published Sep 22, 2025
CVE-2025-59535
DotNetNuke.Core allows loading of unused themes on anonymous clients through query parameters
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
Dnn.Platform · dnnsoftware
< 10.1.0 · source: vendor
DO
Dotnetnuke · Dnnsoftware
before 10.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59535
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59535
Product
https://github.com/dnnsoftware/Dnn.Platform/blob/develop/DNN%20Platform/Library/UI/Skins/Skin.cs#L305
Patch
https://github.com/dnnsoftware/Dnn.Platform/commit/72f30f69fd2214d77f6c2577dfcca495a24caf5c
Vendor Advisory
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-wq2j-w9pm-7x2p
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