FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the mailbox OAuth disconnect action is implemented as `GET /mailbox/oauth-disconnect/{id}/{in_out}/{provider}`. It removes stored OAuth metadata from the mailbox and then redirects. Because it is a GET route, no CSRF token is required and the action can be triggered cross-site against a logged-in mailbox admin. Version 1.8.215 fixes the vulnerability.

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

跨站请求伪造(CSRF)

FreeScout 跨站请求伪造漏洞

FreeScout是FreeScout公司的一个使用 PHP（Laravel 框架）构建的超轻量级且功能强大的免费开源帮助台和共享收件箱。 FreeScout 1.8.215之前版本存在跨站请求伪造漏洞，该漏洞源于邮箱OAuth断开操作为GET路由，无需CSRF令牌，可能导致跨站点触发已登录邮箱管理员的操作。

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