CVE-2026-81892— EasyAdmin 自定义操作调度器绕过访问控制漏洞
一分钟漏洞结论
影响对象
EasyCorp EasyAdminBundle
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
EasyAdmin 是一个面向 Symfony 应用的快速、现代化管理后台生成器。从 4.0.0 到 4.29.16 和 5.5.1 版本中，EasyAdmin 通过单一的 dashboard 路由处理所有后端请求；对于自定义动作（Action::linkToRoute() 和 MenuItem::linkToRoute()），它会在 kernel.controller 事件中，根据 routeName 查询参数替换实际执行的控制器。该替换发生在 Symfony 安全防火墙已针对原始的 dashboard URL
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一、 漏洞 CVE-2026-81892 基础信息
漏洞信息
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Vulnerability Title
EasyAdmin custom-action dispatcher bypasses access_control on other routes
来源: CVE Program / CVE List V5
Vulnerability Description
EasyAdmin is a fast and modern admin generator for Symfony applications. From 4.0.0 until 4.29.16 and 5.5.1, EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (Action::linkToRoute() and MenuItem::linkToRoute()), swaps the executed controller based on the routeName query parameter on the kernel.controller event. The swap happens after Symfony's security firewall has already evaluated access_control against the original dashboard URL, and the routeName value was not validated. As a result, a path-based access_control rule protecting the target route was never evaluated, so a low-privilege backend user who can reach a single EasyAdmin URL and knows a target route's name can execute that route's controller, bypassing the path-based rule. Only path-based protections are bypassed. Routes whose controller enforces its own authorization with #[IsGranted] or denyAccessUnlessGranted() remain protected because those checks are recomputed against the swapped-in controller. This issue is fixed in versions 4.29.16 and 5.5.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| EasyCorp | EasyAdminBundle | >= 4.0.0, < 4.29.16 | - |
|
二、漏洞 CVE-2026-81892 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-81892 其他参考 (5)
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Release 5.5.1 · EasyCorp/EasyAdminBundle · GitHub x_refsource_MISC
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Release 4.29.16 · EasyCorp/EasyAdminBundle · GitHub x_refsource_MISC
IV. Related Vulnerabilities
V. Comments for CVE-2026-81892
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