High severity · published Oct 13, 2026
CVE-2026-110215
youlai-boot through 2.21.1 Missing Authorization in Role Menu Assignment Allows Privilege Escalation
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YO
youlai-boot · youlaitech
through 2.21.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110215
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110215
third-party-advisory
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-user-status-missing-authorization
technical-description
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
patch
https://github.com/youlaitech/youlai-boot/commit/36d2db6dc559817bd4e02b1f33b1998891850497
third-party-advisory
https://www.vulncheck.com/advisories/youlai-boot-through-2.21.1-missing-authorization-in-role-menu-assignment-allows-privilege-escalation
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