CVE-2026-118377

HighCVSS 7.5/10Last modified Nov 4, 2026

Description

mews/pos through 2.0.0 contains an insufficient verification of data authenticity vulnerability that allows unauthenticated attackers to forge payment results by submitting unverified callbacks. GarantiPos, PayForPos and InterPos 3D Pay and 3D Host handlers skip check3DHash(), letting attackers post tampered status, amount or order ID fields to complete orders without paying.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-345

Affected software

Vendor	Product	Versions
mewebstudio	pos	<= 2.0.0

References

Timeline

Published: Oct 28, 2026
Last modified: Nov 4, 2026
NVD status: Deferred

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