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CVE-2026-2666— mingSoft MCMS Template Archive uploadTemplate.do unrestricted upload

Quick assessment

Affected
mingSoft MCMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MingSoft MCMS是中国MingSoft公司的一个模块化内容管理框架。 MingSoft MCMS 6.1.1版本存在安全漏洞，该漏洞源于对文件/ms/file/uploadTemplate.do中参数File的错误操作，可能导致任意文件上传。

CVSS 4.7 · Medium EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2026-2666

Vulnerability Information
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Vulnerability Title
mingSoft MCMS Template Archive uploadTemplate.do unrestricted upload
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
MingSoft MCMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MingSoft MCMS是中国MingSoft公司的一个模块化内容管理框架。 MingSoft MCMS 6.1.1版本存在安全漏洞，该漏洞源于对文件/ms/file/uploadTemplate.do中参数File的错误操作，可能导致任意文件上传。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mingSoft MCMS 6.1.1 cpe:2.3:a:mingsoft:mcms:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-2666

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III. Intelligence Information for CVE-2026-2666

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News Coverage for CVE-2026-2666 (1)

IV. Related Vulnerabilities

Same product: MCMS
Same vendor: mingSoft
Same weakness: CWE-434

V. Comments for CVE-2026-2666

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