CyberRota Analysis
AI-GeneratedConcrete CMS versions 8.3.0 to 9.5.2 are vulnerable due to improper sanitization of stored calendar event names, allowing registered users to inject script payloads that execute in an administrator's browser. This could lead to unauthorized account creation and significant compromise of the system. Organizations using these versions should prioritize patching this vulnerability to protect against potential exploitation.
Original NVD Description
Concrete CMS 8.3.0 to 9.5.2 stored calendar event names without sanitization and rendered them without HTML escaping in the workflow approval and deletion notifications shown in the dashboard "Waiting For Me" block. A registered user permitted to add events to a calendar governed by an approval workflow could submit an event whose name contained a script payload, which then executed in an administrator's browser when the pending request was displayed and could be used to create a new administrator account. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks v01demort for reporting.