CVE-2026-16272
Deferred Deferred - Pending Action

Trust Boundary Violation in PayTR WHMCS Module

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Computer Emergency Response Team of the Republic of Turkey

Description
Use of less trusted source vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API (v9x) WHMCS Module allows Exploitation of Trusted Identifiers. This issue affects PayTR Virtual Pos iFrame API (v9x) WHMCS Module: from v9.0.0 before v9.0.3.

CVSS Scores

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Meta Information

Published
2026-09-09
Last Modified
2026-09-09
Generated
2026-09-29
AI Q&A
2026-09-09
EPSS Evaluated
2026-09-27
NVD
CVE-2026-16272
EUVD
EUVD-2026-74769

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
paytr virtual_pos_iframe_api From 9.0.0 (inc) to 9.0.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-348 The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.

Attack-Flow Graph

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Executive Summary

This vulnerability involves the PayTR Virtual Pos iFrame API (v9x) WHMCS Module using a less trusted source, which could allow attackers to exploit trusted identifiers. It affects versions from v9.0.0 to before v9.0.3.

Detection Guidance

Detection of this vulnerability requires checking the installed version of the PayTR Virtual Pos iFrame API (v9x) WHMCS Module. If the version is between v9.0.0 and v9.0.2, the system is vulnerable. No specific commands are provided in the context to detect this issue.

Impact Analysis

An attacker could exploit this to gain unauthorized access or manipulate transactions due to the misuse of trusted identifiers. The high CVSS score (9.1) indicates significant risk of confidentiality and integrity breaches.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) requirements. Compliance may be compromised due to potential data breaches.

Mitigation Strategies

Update the PayTR Virtual Pos iFrame API (v9x) WHMCS Module to version 9.0.3 or later to address the vulnerability.

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