Arbitrary file upload in Zsadmin2025 Zs-Admin
CVE-2026-16451
A security flaw has been discovered in zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead. This impacts an unknown function of the file /api/system/file/upload of the component com.zs.file.controller.SysFileController. Performing a manipulation of the argument File results in unrestricted upload. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
EPSS: 0.003 (27.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Zsadmin2025 Zs-admin — versions b52e14536d59fda11e56e2536a1c32e82a38cead
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-16451?
- CVE-2026-16451 is a medium-severity vulnerability in Zsadmin2025 Zs-Admin, classified under Improper Access Control. CVSS score: 6.3/10. Published 2026-07-21.
- How severe is CVE-2026-16451?
- Medium severity. CVSS v3 base score is 6.3 out of 10.