CVE-2026-71809 Siam Ordering - Authentication Bypass

Siam Ordering (siam-server) 1.0.0 contains an authentication bypass caused by a hardcoded master verification code, letting remote unauthenticated attackers log in as any user, merchant, or administrator, exploit requires no special conditions.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.59% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
9 September 2026
Updated
15 October 2026
Weakness
CWE-259

Vendor fix

Update to the latest version that removes the hardcoded master verification code.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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