CVE-2020-37238

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.

CVSS v4.0

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/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

CVSS v3.1

6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS

0.24% chance of exploitation in the next 30 days, 15th percentile

Published

2026-05-16

Updated

2026-05-24

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49199

References

• CVE Record
• NVD entry

Related

• CVE-2020-37237
• CVE-2020-37239
• CVE-2020-37236
• CVE-2020-37240
• CVE-2020-37235
• CVE-2020-37241