# CVE-2026-16450: zsadmin2025 ZS-Admin authorization bypass in MyBatis-Plus Tenant Plugin

Source: https://junglewise.ai/threats/cve-2026-16450-zsadmin2025-zs-admin-authorization-bypass-in-mybatis-plus-tenant  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-16450 · Severity: medium · CVSS 4.3 · Published 2026-07-21

A security flaw was found in ZS-Admin, a management framework that uses a multi-tenant architecture to keep different customers' data separate. Due to a failure in how the system verifies user identity, an attacker with a valid account could potentially access or modify data belonging to other organizations (tenants) by simply changing a header in their web request. This breaks the fundamental isolation between different customers using the same service.

Technologies: [Zsadmin2025 ZS-Admin](https://junglewise.ai/threats/technologies/zs-admin). Vendors: [Zsadmin2025](https://junglewise.ai/threats/vendors/zsadmin2025).

## Quick answers

**Is CVE-2026-16450 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-16450 being exploited in the wild.

**How severe is CVE-2026-16450?** Medium severity, with a CVSS score of 4.3, published 21 July 2026.

**Which products and versions are affected?** Zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead.

**Is there a fix for CVE-2026-16450?** 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-2026-16450 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-16450?** Check whether you run Zsadmin2025 ZS-Admin 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

An authorization bypass exists in ZS-Admin up to commit b52e14536d59fda11e56e2536a1c32e82a38cead. The vulnerability stems from the `TenantInterceptor` component, which populates the `TenantContext` using the client-provided `X-Tenant-Id` HTTP header or query parameter without validating it against the authenticated user's actual tenant assignment. This unverified ID is subsequently used by the `MultiTenantHandler` to inject tenant conditions into SQL queries. A remote authenticated attacker can exploit this by supplying a different tenant ID to perform cross-tenant data reads and potentially unauthorized data modifications. As of the advisory date, the project has not yet released a formal patch.

## Affected products

- zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead

## Timeline

- 2026-06-15: disclosed: Issue reported to the project maintainers via GitHub
- 2026-07-21: advisory: CVE published by NVD/VulDB

## References

- [https://github.com/zsadmin2025/zs-admin-java/issues/5](https://github.com/zsadmin2025/zs-admin-java/issues/5)
- [https://vuldb.com/cve/CVE-2026-16450](https://vuldb.com/cve/CVE-2026-16450)
- [https://vuldb.com/submit/858791](https://vuldb.com/submit/858791)
- [https://vuldb.com/vuln/380829](https://vuldb.com/vuln/380829)
- [https://vuldb.com/vuln/380829/cti](https://vuldb.com/vuln/380829/cti)

## Related threats

- [zsadmin2025 ZS-Admin unrestricted file upload in SysFileController](https://junglewise.ai/threats/cve-2026-16451-zsadmin2025-zs-admin-unrestricted-file-upload-in)
- [zsadmin2025 ZS-Admin SQL injection in SysDeptController](https://junglewise.ai/threats/cve-2026-16449-zsadmin2025-zs-admin-sql-injection-in-sysdeptcontroller)