Vulnerability · Published Oct 9, 2026 · Assigned by TR-CERT
CVE-2026-85531Payment Validation Bypass in Sipay Electronic Money's OpenCart 3.x
Critical 9.8
In plain English
A critical-severity security flaw in OpenCart Virtual POS Module from Sipay Electronic Money and Payment Services Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.2%top 89.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sipay Electronic Money and Payment Services Inc. | OpenCart Virtual POS Module | 26.8.2 – before 26.9.1 |
Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1286 government-resource