CVE-2026-8417— Concrete CMS 9.5.0 and below is vulnerable to CSRF in do_update() in the package update controller

Concrete CMS 9.5.0 and below is vulnerable to CSRF in do_update() in the package update controller

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/do_update/<pkgHandle>. The do_update() method in concrete/controllers/single_page/dashboard/extend/update.php checks only canInstallPackages() before executing upgradeCoreData() and upgrade() on the named package's controller. Because the endpoint is a state-changing GET route with no token enforcement, an attacker can force an authenticated administrator to trigger a package upgrade via a single cross-site navigation.In order to be vulnerable, the victim must be passing canInstallPackages() and and a target package must already be already installed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks  https://github.com/maru1009  for reporting.

N/A

跨站请求伪造(CSRF)

Concrete CMS 跨站请求伪造漏洞

Concrete CMS是Concrete CMS开源的一个面向团队的开源内容管理系统。 Concrete CMS 9.5.0及之前版本存在跨站请求伪造漏洞，该漏洞源于未验证CSRF令牌，可能导致攻击者强制管理员触发包升级。

N/A

N/A