CVE-2026-28674 json
xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)
published 2026-03-18 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12702
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
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.
Patch / fix
- danvei233 xiaoheifs 0.4.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/danvei233/xiaoheiFS/security/advisories/GHSA-hcj4-gfvq-qv4p referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- danvei233 xiaoheiFS
Classification
References
-
github.com
/danvei233/xiaoheiFS/security/advisories/GHSA-hcj4-gfvq-qv4p
exploit, vendor-advisory
Sources
- CVE List CVE-2026-28674
- NVD CVE-2026-28674
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