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CVE-2026-81897 Concrete CMS below version 9.5.3 is vulnerable to Stored XSS via Express form Text control save_control

🗓️ 15 Sep 2026 16:47:02Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

Stored XSS in Concrete CMS below 9.5.3 via unvalidated CSRF token in Express form Text control.

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17 Sep 2026 03:47Current
5.8Medium risk
Vulners AI Score5.8
CVSS 47.7
3