Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck
CVE-2026-110215youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation
High 8.8
In plain English
A high-severity missing authorization in youlai-boot from youlaitech. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| youlaitech | youlai-boot | 0 – through 2.21.1 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-user-status-missing-authorization third-party-advisory
- https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai/boot/system/controller/RoleController.java#L111-L119 technical-description
- https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai/boot/system/service/impl/RoleServiceImpl.java#L222-L243 technical-description
- https://github.com/youlaitech/youlai-boot/commit/36d2db6dc559817bd4e02b1f33b1998891850497 patch
- VulnCheck Advisory: youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation third-party-advisory