CVE-2026-108661 JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/changeOwenUserTenant
Authenticated users can bypass authorization to reassign tenant ownership, allowing privilege escalation and unauthorized data modification.
- 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-2026-108661?
CVE-2026-108661 is a high-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 any authenticated user to transfer tenant ownership via POST /sys/tenant/changeOwenUserTenant. Low-privileged attackers can supply userId and tenantId parameters to reassign any tenant's owner to a member, including themselves, and strip the legitimate owner.
Weakness: CWE-862
Which versions are affected by CVE-2026-108661?
How do I fix CVE-2026-108661?
No fix has been published for CVE-2026-108661 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-2026-108661 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108661 exists.
Sources
Also known as GHSA-hh6j-j8mj-f737.