# CVE-2026-109186: jshERP mass assignment vulnerability in UserController

Source: https://junglewise.ai/threats/cve-2026-109186-jsherp-through-3-6-contains-a-mass-assignment-vulnerability-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-109186 · Severity: high · CVSS 8.8 · Published 2026-10-12

jshERP is an open-source ERP (Enterprise Resource Planning) system used by businesses to manage inventory, sales, and operations. The application contains a vulnerability that allows authenticated users to modify protected account fields, including passwords and tenant IDs, through a specially crafted web request. An attacker with valid login credentials could hijack other users' accounts or gain unauthorized access to other organization's data.

Technologies: [Jishenghua jshERP](https://junglewise.ai/threats/technologies/jsherp). Vendors: [Jishenghua](https://junglewise.ai/threats/vendors/jishenghua).

## Quick answers

**Is CVE-2026-109186 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109186 being exploited in the wild.

**How severe is CVE-2026-109186?** High severity, with a CVSS score of 8.8, published 12 October 2026.

**Which products and versions are affected?** Jishenghua jshERP through 3.6.

**Is there a fix for CVE-2026-109186?** 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-2026-109186 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-109186?** Check whether you run Jishenghua jshERP 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

A mass assignment vulnerability in the UserController's PUT /user/update endpoint fails to restrict which fields can be modified, allowing authenticated attackers to overwrite sensitive attributes such as tenant_id and password_hash. The vulnerability requires valid authentication but no additional permissions or user interaction. An attacker can change another user's password or switch tenant context to achieve privilege escalation or cross-tenant data access.

## Affected products

- jishenghua jshERP through 3.6

## Timeline

- 2026-10-12: disclosed

## References

- [https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/jshERP/poc_identity_privilege_write.py](https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/jshERP/poc_identity_privilege_write.py)
- [https://github.com/jishenghua/jshERP/blob/8f28e7c2fe54d54de3621a414f5df1833dc5a55f/jshERP-boot/src/main/java/com/jsh/erp/controller/UserController.java](https://github.com/jishenghua/jshERP/blob/8f28e7c2fe54d54de3621a414f5df1833dc5a55f/jshERP-boot/src/main/java/com/jsh/erp/controller/UserController.java)

## Related threats

- [jshERP improper authorization in accounting endpoints](https://junglewise.ai/threats/cve-2026-109184-jsherp-through-3-6-contains-an-improper-authorization)
- [jshERP authorization bypass in bill creation](https://junglewise.ai/threats/cve-2026-109183-jsherp-through-3-6-contains-an-authorization-bypass)
- [jshERP authorization bypass in supplier export](https://junglewise.ai/threats/cve-2026-109182-jsherp-through-3-6-contains-an-incorrect-authorization)
- [jshERP missing authorization in LogController](https://junglewise.ai/threats/cve-2026-109179-jsherp-through-3-6-contains-a-missing-authorization)
- [jshERP missing authorization in LogController](https://junglewise.ai/threats/cve-2026-109178-jsherp-through-3-6-contains-a-missing-authorization)