Cross site scripting in Concrete CMS
Date: 2024-09
Affected: composer/concrete5/concrete5, composer/concrete5/concrete5
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2024-7398
CWE: CWE-79
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

Concrete CMS versions 9 through 9.3.3 and versions below 8.5.19 are vulnerable to stored XSS in the calendar event addition feature because the calendar event name was not sanitized on output. Users or groups with permission to create event calendars can embed scripts, and users or groups with permission to modify event calendars can execute scripts.


Mitigations:

Architectural layers (MAESTRO):