Vulnerability · Published Feb 3, 2026 · Assigned by VulnCheck

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

Medium 6.4

In plain English

A medium-severity cross-site scripting in DotNetNuke from Dnnsoftware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.4%top 70.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Dnnsoftware	DotNetNuke	0 – through 9.5

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References

ExploitDB-48124 exploit
DotNetNuke Official Vendor Homepage product
Vulnerability Analysis Blog Post technical-description
VulnCheck Advisory: DotNetNuke 9.5 - Persistent Cross-Site Scripting third-party-advisory