CVE-2026-108661

MEDIUM 6.5

JeecgBoot through 3.9.5 Missing Authorization via /sys/tenant/changeOwenUserTenant

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	jeecgboot
Product	jeecgboot
Published	Oct 10, 2026

Stay Ahead of the Next One

Get instant alerts for jeecgboot jeecgboot

Be the first to know when new medium vulnerabilities affecting jeecgboot jeecgboot are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

jeecgboot / JeecgBoot

0 ≤ 3.9.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_tenant_change_owner.py github.com: https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/SysTenantController.java#L726-L731 vulncheck.com: https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-tenant-changeowenusertenant

Credits

Yaqi Chao