CVE-2026-110215: youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-13 · updated 2026-10-26
Weakness: CWE-862

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.

Affected products

youlaitech youlai-boot: through 2.21.1

References

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
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-user-status-missing-authorization
https://www.vulncheck.com/advisories/youlai-boot-through-2.21.1-missing-authorization-in-role-menu-assignment-allows-privilege-escalation
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-user-status-missing-authorization

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