CVE-2026-108678 [MEDIUM] – JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the queryUserRol

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the queryUserRoles handler of SystemApiController that lets authenticated users read any user’s role codes. Low-privileged attackers can send GET requests to /sys/api/queryUserRoles with an arbitrary username to enumerate role assignments and identify administrator accounts.