CVE-2025-48377: Dnn.Platform vulnerable to Reflected Cross-Site Scripting (XSS) in module actions in edit mode

Severity: medium (CVSS 5.4 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: 2025-05-23 · updated 2026-06-17
Weakness: CWE-79

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 9.13.9, a specially crafted URL may be constructed which can inject an XSS payload that is triggered by using some module actions. Version 9.13.9 fixes the issue.

Affected products

DotNetNuke CMS Fixed in 9.1.1: before 9.13.9 — fixed in 9.13.9

How to fix

Upgrade to a fixed version: DotNetNuke CMS Fixed in 9.1.1 9.13.9. Check the vendor advisory for mitigations.

References

https://github.com/dnnsoftware/Dnn.Platform/commit/351b166492ad4b6509c273dc83211d52238e31a7
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-79m3-rvx2-3qq9

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