CVE-2020-37237

Composr CMS 10.0.34 contains a persistent cross-site scripting vulnerability that allows authenticated administrators to inject malicious scripts through the banner management interface. Attackers with admin credentials can inject XSS payloads in the Description field of the Add banner functionality, which execute for all website visitors when they access the home page.

Score

CVSS 3.1 6.4 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-05-16

Last modified

2026-05-24

Weaknesses

CWE-79

Affected products

• Composr Cms (Compo)

References

• https://compo.sr/
• https://compo.sr/download.htm
• https://www.exploit-db.com/exploits/49190
• https://www.vulncheck.com/advisories/composr-cms-persistent-cross-site-scripting-via-banners