CVE-2026-16450Public exploitNetwork attack vector

Cross-tenant data access via trusted tenant header

Published Jul 21, 2026 · Updated Jul 21, 2026

Authorization bypass in zsadmin2025 ZS-Admin allows remote authenticated users to read business data from other tenants. TenantInterceptor stores the client-controlled X-Tenant-Id value in TenantContext, and MultiTenantHandler inserts it into SQL tenant predicates without matching it to the authenticated account. A valid account and endpoint permission are required; reachable operations expose cross-tenant reads and can permit writes or deletions when the account already holds those operation permissions.

CVSS severityUnavailable
Unscored
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authorization bypass in zsadmin2025 ZS-Admin allows remote authenticated users to read business data from other tenants. TenantInterceptor stores the client-controlled X-Tenant-Id value in TenantContext, and MultiTenantHandler inserts it into SQL tenant predicates without matching it to the authenticated account. A valid account and endpoint permission are required; reachable operations expose cross-tenant reads and can permit writes or deletions when the account already holds those operation permissions.

The record

CVE
CVE-2026-16450
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
zsadmin2025
Product
ZS-Admin
Classifications
CWE-285, CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=b52e14536d59fda11e56e2536a1c32e82a38cead

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

zsadmin2025 · ZS-Adminversion=b52e14536d59fda11e56e2536a1c32e82a38cead

Published CVSS scores

4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
4.0VulDB CNAAV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo