Arbitrary file upload in Mingsoft Mcms
CVE-2026-2666
A flaw has been found in mingSoft MCMS 6.1.1. The affected element is an unknown function of the file /ms/file/uploadTemplate.do of the component Template Archive Handler. Executing a manipulation of the argument File can lead to unrestricted upload. The attack can be launched remotely. The exploit has been published and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (45.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Mingsoft Mcms — versions 6.1.1
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/chujianxin0101/vuln/issues/11 (issue-tracking, Exploit, Issue Tracking)
- github.com/chujianxin0101/vuln/issues/11 (issue-tracking, Exploit, exploit, Issue Tracking)
Frequently asked questions
- What is CVE-2026-2666?
- CVE-2026-2666 is a medium-severity vulnerability in Mingsoft Mcms, classified under Improper Access Control. CVSS score: 4.7/10. Published 2026-02-18.
- How severe is CVE-2026-2666?
- Medium severity. CVSS v3 base score is 4.7 out of 10.