Vulnerability · Published Mar 18, 2026 · Assigned by GitHub_M

CVE-2026-28674xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)

High 7.2

In plain English

A high-severity unrestricted file upload in xiaoheiFS from danvei233. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.4%top 69.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
danvei233	xiaoheiFS	< 0.4.0

Weakness: CWE-434, CWE-798 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/danvei233/xiaoheiFS/security/advisories/GHSA-hcj4-gfvq-qv4p x_refsource_CONFIRM