Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-r9wp-qq53-qvjx
Advisory ID github_osv/GHSA-r9wp-qq53-qvjx
Aliases CVE-2026-2666
Summary mingSoft MCMS does not properly restrict file uploads 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.
Status Published
Exploitability 0.5
Weighted Severity 4.2
Risk 2.1
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-284 Improper Access Control
System Score Found at
cvssv3.1 4.7 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-r9wp-qq53-qvjx/GHSA-r9wp-qq53-qvjx.json
cvssv4 2.0 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-r9wp-qq53-qvjx/GHSA-r9wp-qq53-qvjx.json
generic_textual LOW
Reference id Reference type URL
https://github.com/chujianxin0101/vuln/issues/11
https://github.com/ming-soft/MCMS
https://vuldb.com/?ctiid.346463
https://vuldb.com/?id.346463
https://vuldb.com/?submit.753243
CVE-2026-2666 https://nvd.nist.gov/vuln/detail/CVE-2026-2666
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-r9wp-qq53-qvjx/GHSA-r9wp-qq53-qvjx.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-r9wp-qq53-qvjx/GHSA-r9wp-qq53-qvjx.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-18T20:35:24Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/2xxx/CVE-2026-2666.json

Source Advisory: vulnrichment/CVE-2026-2666

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]