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CVE-2026-28674

HIGH CVSS 3.1: 7.2 EPSS 0.05%
Updated Mar 23, 2026
Danvei233
Parameter Value
CVSS 7.2 (HIGH)
Affected Versions before 0.4.0
Fixed In 0.4.0
Type CWE-434 (Unrestricted File Upload), CWE-798 (Hardcoded Credentials)
Vendor Danvei233
Public PoC No

xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a hardcoded password (`qweasd123456`) and ignores file content.

A background watcher (`StartWatcher`) then scans this folder every 5 seconds. If it finds a new executable, it runs it immediately, resulting in RCE. Version 4.0.0 fixes the issue.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Danvei233 Xiaoheifs
cpe:2.3:a:danvei233:xiaoheifs:*:*:*:*:*:*:*:*
0.4.0

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