youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation

Advisories

youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation

severity: high
date: 10/13/2026
Affecting: youlai-boot <= 2.21.1
CVE: CVE-2026-110215
CWE: CWE-862 Missing Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-user-status-missing-authorization
https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai/boot/system/controller/RoleController.java#L111-L119
https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai/boot/system/service/impl/RoleServiceImpl.java#L222-L243
https://github.com/youlaitech/youlai-boot/commit/36d2db6dc559817bd4e02b1f33b1998891850497
Credit: hieuPenguinnn
Description: youlai-boot through 2.21.1 contains a missing authorization vulnerability that allows authenticated users to assign arbitrary menu and button permissions to roles via PUT /api/v1/roles/{roleId}/menus. Low-privileged users such as the GUEST test account can grant all permissions to their own role, refreshing the Redis permission cache to gain administrator-equivalent access.

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