CVE-2026-108651 [MEDIUM] – JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the getRolesByUs

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the getRolesByUserId handler of SystemApiController that allows authenticated users to retrieve any user’s role codes. Low-privileged attackers can supply arbitrary userId values to GET /sys/api/getRolesByUserId to enumerate role assignments and identify administrator accounts.