CVE-2026-108886 JeecgBoot through 3.9.5 Missing Authorization via /sys/user/queryChildrenByUsername
Authenticated attackers can retrieve sensitive user account details by exploiting missing authorization checks in the user query endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108886?
CVE-2026-108886 is a medium-severity missing authorization vulnerability in JeecgBoot, published on 11 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the SysUserController queryChildrenByUsername handler that allows any authenticated user to retrieve other users' account records. Low-privileged attackers can supply arbitrary userId values to obtain names, emails, phone numbers, employee numbers, department assignments, and staff lists of departments those users head.
Weakness: CWE-862
Which versions are affected by CVE-2026-108886?
How do I fix CVE-2026-108886?
No fix has been published for CVE-2026-108886 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-108886 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108886 exists.
Sources
Also known as GHSA-x8g5-jg6r-5f34.