CVE-2026-7882
Concrete CMS 9.5.0 and below is vulnerable to CSRF via the DeleteFile controller
Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protection for the file deletion endpoint, allowing cross-site request forgery attacks against users who have permission to edit conversation messages. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with a vector of CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Tristan Mandani for reporting.
| CWE | CWE-352 |
| Vendor | concrete cms |
| Product | concrete cms |
| Published | May 21, 2026 |
| Last Updated | May 22, 2026 |
Get instant alerts for concrete cms concrete cms
Be the first to know when new unknown vulnerabilities affecting concrete cms concrete cms are published — delivered to Slack, Telegram or Discord.