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TI-2026-22890 Aliases CVE-2026-28674

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

Priority HIGH 67CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434 and CWE-798.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00363 30th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed xiaoheiFS (danvei233): 0.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
danvei233xiaoheiFSbefore 0.4.00.4.0Patch availableCNA
  • xiaoheiFS Vendordanvei233 Affected before 0.4.0 Fixed in 0.4.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:danvei233:xiaoheifs:*:*:*:*:*:*:*:*before 0.4.0Vulnerabledanvei233
  • cpe:2.3:a:danvei233:xiaoheifs:*:*:*:*:*:*:*:* Versions before 0.4.0 Vulnerable ·danvei233

Remediation

  • Fix · CNA xiaoheiFS (danvei233) Fixed in 0.4.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28674

References

Exploit 1

  • TI-2026-22889 xiaoheiFS Vulnerable to RCE via Unrestricted Plugin Installation (Manifest Manipulation) CVSS 3.1HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences