PT-2026-25971 · Xiaoheifs · Xiaoheifs

Yinglongkaqi · Published 2026-03-18 · Updated 2026-03-19 · CVE-2026-28674

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions xiaoheiFS versions prior to 4.0.0

Description xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. Versions up to and including 0.3.15 allow administrators to upload any file to the plugins/payment/ directory via the AdminPaymentPluginUpload endpoint. The system only verifies a hardcoded password (qweasd123456) and does not inspect the file content. A background process, StartWatcher, scans this directory every 5 seconds and immediately executes any new executable files found, leading to Remote Code Execution (RCE).

Recommendations Versions prior to 4.0.0 should be updated to version 4.0.0 or later.

Exploit

Fix

Unrestricted File Upload

Using Hardcoded Credentials

Weakness Enumeration

CWE-434

CWE-798

Related Identifiers

CVE-2026-28674

Affected Products

Xiaoheifs

References · 4

• 🔥 https://github.com/danvei233/xiaoheiFS/security/advisories/GHSA-hcj4-gfvq-qv4p · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-28674 · Security Note
• https://twitter.com/CVEnew/status/2034136442079764655 · Twitter Post
• https://twitter.com/CVEarity/status/2034544604587212900 · Twitter Post