What’s Vulnerable › Vulnerabilities

CVE-2020-37103: DotNetNuke 9.5 - Persistent Cross-Site Scripting

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-03 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• DotNetNuke CMS Fixed in 9.1.1: through 9.5.0

References

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

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