CVE-2026-53902— MyComplianceOffice MCO 权限许可和访问控制问题漏洞

Privilege Escalation in MCO

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/profile-sections/group-membership endpoint. An authenticated user can modify their group membership without proper authorization checks, allowing privilege escalation. An attacker can add themselves to arbitrary groups by supplying a valid group ID, which can be obtained via other application functionalities (e.g. /customer/servlet/mco/webapi/group/picker/groups), provided he has necessary permissions, or potentially inferred through brute-force techniques. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.

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特权授予不正确

MyComplianceOffice MCO 权限许可和访问控制问题漏洞

MyComplianceOffice MCO是MyComplianceOffice公司的一款合规与风险管理软件。 MyComplianceOffice MCO 25.3.3.1版本存在安全漏洞，该漏洞源于对/customer/servlet/mco/webapi/profile-sections/group-membership端点的授权检查不当，可能导致经过身份验证的用户修改其组成员资格，从而实现权限提升。攻击者可以通过提供有效的组ID将自己添加到任意组，这些组ID可通过其他应用程序功能获取。

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