CVE-2026-28674CWE-434CWE-798

xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)

High · published March 18, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
42.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00507 · 42.4th percentile
Weaknesses
CWE-434 · Unrestricted Upload of File with Dangerous Type; CWE-798 · Use of Hard-coded Credentials
Published
2026-03-18T00:48Z
EPSS history
Timeline
  • 18 MAR 00:48Z
    xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)
    cvelistv5