CVE-2026-118377

HIGH
MEDIUM Priority: 0.02 BB Relevance: 77/100
Published: 2026-10-28 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: High
VA: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
mewebstudio pos 0

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001800
Percentile 7.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00180
2026-10-28
0.00180

Intelligence Sources

mitre ref →
nvd ref →