CVE-2026-108876 [MEDIUM] – JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the putCancelQui

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the putCancelQuit handler of SysUserController, allowing any authenticated user to cancel user resignations. Low-privileged attackers can supply user ids and a tenantId parameter or X-Tenant-Id header to restore ended, pending, or refused tenant memberships to normal.