CVE-2020-37238

MEDIUM

CMS Made Simple 2.2.15 Stored XSS via SVG File Upload

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-37238. PoCs published by Eshan Singh.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in CMS Made Simple 2.2.15 via SVG file upload. The SVG payload contains JavaScript that executes when the file is accessed, allowing an attacker to steal cookies or perform other malicious actions.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Eshan Singh · textwebappsphp
https://www.exploit-db.com/exploits/49199

This exploit demonstrates a stored XSS vulnerability in CMS Made Simple 2.2.15 via SVG file upload. The SVG payload contains JavaScript that executes when the file is accessed, allowing an attacker to steal cookies or perform other malicious actions.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: CMS Made Simple v2.2.15
Auth required
Prerequisites: Authenticated access to the CMS admin panel · Ability to upload files via the Content Manager
devstral-2 · analyzed May 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit exploit
ExploitDB-49199
https://www.exploit-db.com/exploits/49199
Product product
Official Product Homepage
https://www.cmsmadesimple.org/
Product product
Product Reference
https://www.cmsmadesimple.org/downloads
Third Party Advisory third-party-advisory
VulnCheck Advisory: CMS Made Simple 2.2.15 Stored XSS via SVG File Upload
https://www.vulncheck.com/advisories/cms-made-simple-stored-xss-via-svg-file-upload

Scores

CVSS v3 6.4
EPSS 0.0003
EPSS Percentile 10.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
Cmsmadesimple/CMS Made Simple 2.2.15
Published May 16, 2026
Tracked Since May 16, 2026