CVE-2020-37103

MEDIUM 6.4

DotNetNuke 9.5 - Persistent Cross-Site Scripting

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

DotNetNuke 9.5 contains a persistent cross-site scripting vulnerability that allows normal users to upload malicious XML files with executable scripts through journal tools. Attackers can upload XML files with XHTML namespace scripts to execute arbitrary JavaScript in users' browsers, potentially bypassing CSRF protections and performing more damaging attacks.

CWE	CWE-79
Vendor	dnnsoftware
Product	dotnetnuke
Published	Feb 3, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Dnnsoftware / DotNetNuke

0 ≤ 9.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/48124 dnnsoftware.com: http://dnnsoftware.com/ medium.com: https://medium.com/@SajjadPourali/dnn-dotnetnuke-cms-not-as-secure-as-you-think-e8516f789175 vulncheck.com: https://www.vulncheck.com/advisories/dotnetnuke-persistent-cross-site-scripting

Credits

Sajjad Pourali