CVE-2026-108637 JeecgBoot through 3.9.5 Missing Authorization via deleteUserGroupBatch Endpoint
Low-privileged users can delete user group members without permission, allowing unauthorized modification of administrator-maintained groups.
- 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-2026-108637?
CVE-2026-108637 is a medium-severity missing authorization vulnerability in JeecgBoot, published on 10 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 that allows low-privileged authenticated users to remove user group members by calling DELETE /sys/user/deleteUserGroupBatch. Attackers can supply any groupId and comma-separated userIds to delete sys_ugroup_user rows without permission or tenant checks, tampering with administrator-maintained groups.
Weakness: CWE-862
Which versions are affected by CVE-2026-108637?
How do I fix CVE-2026-108637?
No fix has been published for CVE-2026-108637 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-2026-108637 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108637 exists.
Sources
Also known as GHSA-26w9-3rx3-xg95.