# CVE-2026-71809

## Summary

- **CVE ID:** CVE-2026-71809
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 14, 2026

## Description

Authentication Bypass via Hardcoded Master Verification Code vulnerability in Siam Ordering (siam-server) 1.0.0 allows remote unauthenticated attackers to log in as any user, merchant, or administrator.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](https://github.com/W000i/vuln/issues/11)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._