CyberRota Analysis
AI-GeneratedConcrete CMS versions 9.0.0 to 9.5.3 are susceptible to a stored cross-site scripting (XSS) vulnerability due to inadequate input sanitization of custom page alias names, allowing authenticated users with editor permissions to inject malicious scripts. This vulnerability can lead to session hijacking, enabling an attacker to escalate privileges to an administrator level when the affected alias is accessed in the administrative Sitemap panel. Organizations using these versions should prioritize patching this vulnerability to protect against potential exploitation by malicious insiders or compromised accounts.
Original NVD Description
Concrete CMS 9.0.0 through 9.5.3 is vulnerable to stored XSS via the custom page alias name (customAliasName) because the Edit Alias dialog applied only trim() to the submitted value and performed no input neutralization. An authenticated user holding canWrite (editor) permission on a page could store a malicious alias name that was later rendered unescaped in the administrative Sitemap panel, where it executed automatically in any administrator or editor session that opened the panel, allowing an editor to escalate to administrator through the victim's active session. 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:L/SC:N/SI:N/SA:N. Thanks Nguyen Manh Thuan for reporting.