# CVE-2026-108875: JeecgBoot authorization bypass in user group management

Source: https://junglewise.ai/threats/cve-2026-108875-jeecgboot-through-3-9-5-contains-a-missing-authorization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-11. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108875 · Severity: medium · CVSS 4.3 · Published 2026-10-11

JeecgBoot is a Java application development framework that manages user accounts and group memberships. The SysUserController component fails to verify permissions before allowing authenticated users to add other users to administrator groups, enabling privilege escalation. A low-privileged attacker can modify group assignments to gain administrative capabilities.

Technologies: [JeecgBoot](https://junglewise.ai/threats/technologies/jeecgboot). Vendors: [JeecgBoot](https://junglewise.ai/threats/vendors/jeecgboot).

## Quick answers

**Is CVE-2026-108875 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108875 being exploited in the wild.

**How severe is CVE-2026-108875?** Medium severity, with a CVSS score of 4.3, published 11 October 2026.

**Which products and versions are affected?** JeecgBoot through 3.9.5.

**Is there a fix for CVE-2026-108875?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108875 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-108875?** Check whether you run JeecgBoot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The addSysUserGroup handler in SysUserController lacks authorization checks, allowing any authenticated user to send POST requests with arbitrary user IDs and group IDs. The vulnerability exists in JeecgBoot through version 3.9.5. An attacker with valid credentials can escalate privileges by adding themselves or other users to privileged groups without permission verification.

## Affected products

- JeecgBoot JeecgBoot through 3.9.5

## Timeline

- 2026-10-11: disclosed

## References

- [https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_user_group_member_addition.py](https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_user_group_member_addition.py)
- [https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/SysUserController.java](https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/SysUserController.java)

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