Medium severity · published Feb 3, 2026
CVE-2020-37103
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
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
Dotnetnuke · Dnnsoftware
through 9.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-37103
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-37103
Product
http://dnnsoftware.com/
Third Party Advisory
https://medium.com/@SajjadPourali/dnn-dotnetnuke-cms-not-as-secure-as-you-think-e8516f789175
Exploit
https://www.exploit-db.com/exploits/48124
Third Party Advisory
https://www.vulncheck.com/advisories/dotnetnuke-persistent-cross-site-scripting
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