CyberRota Analysis
AI-GeneratedConcrete CMS versions prior to 9.5.3 are vulnerable due to improper HTML escaping of remote feed item titles in the RSS Displayer block, leading to stored cross-site scripting (XSS) vulnerabilities. This allows an attacker to execute malicious scripts in the context of the site for any visitor, including administrators, without needing an account. Organizations using affected versions should prioritize patching to mitigate potential exploitation risks.
Original NVD Description
Concrete CMS RSS Displayer block below version 9.5.3 rendered remote feed item titles without HTML escaping, resulting in stored cross-site scripting. An attacker able to control a title in a syndicated feed could execute script in the site origin for any visitor to the affected page, including administrators, without holding an account on that site. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 6.0 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.