---
id: CVE-2020-37238
title: >-
  CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability
  that allows authenticated users with Content Manager access to inject
  malicious scripts through SVG file uploads
summary: >-
  CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability
  that allows authenticated users with Content Manager access to inject
  malicious scripts through SVG file uploads. Attackers can upload SVG files
  containing embed…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-05-16'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T10:10:00.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-37238'
references:
  - url: 'https://www.cmsmadesimple.org/'
    label: disclosure@vulncheck.com
  - url: 'https://www.cmsmadesimple.org/downloads'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/49199'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/cms-made-simple-stored-xss-via-svg-file-upload
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00243
epssPercentile: 0.13911
ingestedAt: '2026-09-29T10:31:36.286Z'
---

## Overview

CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability that allows authenticated users with Content Manager access to inject malicious scripts through SVG file uploads. Attackers can upload SVG files containing embedded JavaScript to the file manager, which executes when other authenticated users access the uploaded file, enabling cookie theft and session hijacking.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.