CVE-2020-37238
CMS Made Simple 2.2.15 Stored XSS via SVG File Upload
- State
- Published
- Severity
- 5.1 Medium
- Published
- May 16, 2026
- Updated
- May 24, 2026
- Reserved
- May 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
CMS Made SimpleCmsmadesimple |
|
References
- ExploitDB-49199exploit
- Official Product Homepageproduct
- Product Referenceproduct
- VulnCheck Advisory: CMS Made Simple 2.2.15 Stored XSS via SVG File Uploadthird-party-advisory
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