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CVE-2026-16025— Improper Payment Validation in PayTR's PayTR Virtual Pos iFrame API (v9x) WHMCS Module

Quick assessment

Affected
PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API (v9x) WHMCS Module
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PayTR 支付与电子货币机构（PayTR Payment and Electronic Money Institution Inc.）的 PayTR 虚拟 POS iFrame API（v9x）WHMCS 模块中存在“输入指定数量验证不当”的漏洞，可能导致输入数据被操纵（Input Data Manipulation）。 该问题影响范围：PayTR 虚拟 POS iFrame API（v9x）WHMCS 模块，受影响版本为 v9.0.0 至 v9.0.3（不含）之前。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1561 · Disk Wipe

Affected Version Matrix 1

VendorProduct Version RangeStatus
PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API (v9x) WHMCS Module v9.0.0< v9.0.3 affected
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I. Basic Information for CVE-2026-16025

Vulnerability Information
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Vulnerability Title
Improper Payment Validation in PayTR's PayTR Virtual Pos iFrame API (v9x) WHMCS Module
Source: CVE Program / CVE List V5
Vulnerability Description
Improper validation of specified quantity in input vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API (v9x) WHMCS Module allows Input Data Manipulation. This issue affects PayTR Virtual Pos iFrame API (v9x) WHMCS Module: from v9.0.0 before v9.0.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API (v9x) WHMCS Module v9.0.0 ~ v9.0.3 -

II. Public POCs for CVE-2026-16025

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III. Intelligence Information for CVE-2026-16025

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Vendor Advisories for CVE-2026-16025 (1)

IV. Related Vulnerabilities

Same product: PayTR Virtual Pos iFrame API (v9x) WHMCS Module
Same vendor: PayTR Payment and Electronic Money Institution Inc.
Same weakness: CWE-1284

V. Comments for CVE-2026-16025

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