CVE-2026-27591— Winter: Privilege escalation by authenticated backend users

Winter: Privilege escalation by authenticated backend users

Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Prior to 1.0.477, 1.1.12, and 1.2.12, Winter CMS allowed authenticated backend users to escalate their accounts level of access to the system by modifying the roles / permissions assigned to their account through specially crafted requests to the backend while logged in. To actively exploit this security issue, an attacker would need access to the Backend with a user account with any level of access. This vulnerability is fixed in 1.0.477, 1.1.12, and 1.2.12.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

访问控制不恰当

Winter 安全漏洞

Winter是Winter开源的一款基于 Laravel PHP 框架的免费开源内容管理系统。 Winter 1.0.477之前版本、1.1.12之前版本和1.2.12之前版本存在安全漏洞，该漏洞源于权限分配不当，可能导致经过身份验证的后端用户通过特制请求提升账户访问权限。

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