Vulnerability · Published Oct 10, 2026 · Assigned by VulnCheck
CVE-2026-108661JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/changeOwenUserTenant
Medium 6.5
In plain English
A medium-severity missing authorization in JeecgBoot from jeecgboot. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 88.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- Researcher Proof of Concept exploit
- Vulnerable Code (v3.9.5) technical-description
- VulnCheck Advisory: JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/changeOwenUserTenant third-party-advisory