CVE-2026-16037 — Callback Authentication Bypass via Timing Attack in PayTR's PayTR Virtual Pos iFrame API WHMCS Module

CVE-2026-16037

Callback Authentication Bypass via Timing Attack in PayTR's PayTR Virtual Pos iFrame API WHMCS Module PUBLISHED

Description (CNA)

Observable timing discrepancy vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module allows Black Box Reverse Engineering. This issue affects PayTR Virtual Pos iFrame API WHMCS Module: from v9.0.0 before v9.0.3.

Affected (CNA)

Vendor / product	Versions
PayTR Payment and Electronic Money Institution Inc. / PayTR Virtual Pos iFrame API WHMCS Module	affected v9.0.0 before v9.0.3

CWE

CWE-208

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1034

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.