CyberRota Analysis
AI-GeneratedConcrete CMS versions prior to 9.5.3 are vulnerable due to inadequate validation of anti-CSRF tokens in the save_control action, allowing unauthenticated remote attackers to exploit this flaw. By tricking an authenticated administrator into submitting a forged request, attackers can inject malicious JavaScript into existing Express form entries, leading to persistent cross-site scripting (XSS) vulnerabilities. Organizations using Concrete CMS should prioritize patching this vulnerability to protect against potential exploitation and data compromise.
Original NVD Description
In Concrete CMS below CMS 9.5.3, the save_control action in the Express entities forms dashboard controller did not validate the anti-CSRF token. By causing an authenticated administrator to submit a forged cross-site request, a remote attacker without credentials could write attacker-controlled headline and body values to an existing Express form Text control. Those values were emitted without output encoding by the Express form Text element, so the injected markup executed as persistent JavaScript for any administrator who later opened the affected entry, resulting in stored cross-site scripting. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.7 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.