Is CVE-2020-37103 actively exploited?

CVE-2020-37103 has no public evidence of in-the-wild exploitation as of 2026-02-09.

What is the CVSS score for CVE-2020-37103?

CVE-2020-37103 has a CVSS score of 5.1 (MEDIUM severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

How do I patch CVE-2020-37103?

Patch guidance is available from dnnsoftware security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-37103.

Which products are affected by CVE-2020-37103?

1 product: dnnsoftware dotnetnuke.

CVE-2020-37103 - remediation guidance & executive summary

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 Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector: network
Complexity: low
Privileges: low
User Action: passive
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: DNNSOFTWARE
Published: 2/3/2026
Last Modified: 2/9/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-37103

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary