CVE-2026-108649 [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 queryUserRolesById handler of SystemApiController that lets authenticated users read any user’s role codes. Low-privileged attackers can send a userId to GET /sys/api/queryUserRolesById to enumerate role assignments and identify administrator accounts.