GHSA-4pcg-pjp5-3mc6Medium

Concrete CMS vulnerable to Reflected Cross-Site Scripting (XSS) in Conversation Messages Dashboard Page

Published
August 6, 2025
Last Modified
August 6, 2025

🔗 CVE IDs covered (1)

📋 Description

Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page. Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions.

🎯 Affected products2

  • composer/concrete5/concrete5:< 8.5.21
  • composer/concrete5/concrete5:>= 9.0.0RC1, < 9.4.3

🔗 References (7)