CVE-2026-85531 PUBLISHED

Payment Validation Bypass in Sipay Electronic Money's OpenCart 3.x

Assigner: TR-CERT
Reserved: 04.09.2026 Published: 09.10.2026 Updated: 09.10.2026

Improper verification of cryptographic signature vulnerability in Sipay Electronic Money and Payment Services Inc. OpenCart Virtual POS Module allows Signature Spoofing by Improper Validation.

This issue affects OpenCart Virtual POS Module: from 26.8.2 before 26.9.1.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Sipay Electronic Money and Payment Services Inc.
Product	OpenCart Virtual POS Module
Versions	Default: unaffected affected from 26.8.2 to 26.9.1 (excl.)

Credits

Yasin SUER finder

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1286

Problem Types

CWE-347 Improper verification of cryptographic signature CWE

Impacts

CAPEC-475 Signature Spoofing by Improper Validation