PT-2026-5852 · Dnnsoftware+1 · Dotnetnuke+1

Sajjad Pourali · Published 2026-02-03 · Updated 2026-02-03 · CVE-2020-37103

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions DotNetNuke version 9.5

Description A persistent cross-site scripting issue allows normal users to upload malicious XML files containing executable scripts via journal tools. By uploading XML files with XHTML namespace scripts, attackers can execute arbitrary JavaScript in the browsers of other users, which may lead to the bypass of Cross-Site Request Forgery (CSRF) protections—a mechanism used to prevent unauthorized commands from being transmitted from a user the web application trusts.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-37103

Affected Products

Dotnetnuke

Dnn.Platform

References · 6

• 🔥 https://exploit-db.com/exploits/48124 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-37103 · Security Note
• https://osv.dev/vulnerability/CVE-2020-37103 · Vendor Advisory
• https://vulncheck.com/advisories/dotnetnuke-persistent-cross-site-scripting · Note
• http://dnnsoftware.com · Note
• https://medium.com/@SajjadPourali/dnn-dotnetnuke-cms-not-as-secure-as-you-think-e8516f789175 · Note