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Servers and applications

CVE-2025-32371

Unexpected external content may be displayed in ImageHandler

Severity
Medium 4.3
Published
8 Apr 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.13.4
Also known as
GHSA-2rrc-g594-rhqw
Sources
NVD, Project advisories (GitHub)

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. A url could be crafted to the DNN ImageHandler to render text from a querystring parameter. This text would display in the resulting image and a user that trusts the domain might think that the information is legitimate. This vulnerability is fixed in 9.13.4.

Affected software

SoftwareAffected versions
DNN PlatformServers and applications · cpe:a:dnnsoftware:dotnetnuke
  • Every version before 9.13.4
DNN PlatformServers and applications · github:dnnsoftware/dnn.platform
  • Every version before 9.13.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-32371
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-32371
  • GitHub Advisory Database https://github.com/advisories/GHSA-2rrc-g594-rhqw
  • github.com https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2rrc-g594-rhqw