Improper signature validation in Sipay OpenCart Virtual POS Module
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-347.
Summary
Sipay Electronic Money and Payment Services Inc. OpenCart Virtual POS Module from 26.8.2 before 26.9.1 is affected. Improper verification of a cryptographic signature (CWE-347) lets attackers spoof signatures through improper validation. An unauthenticated remote attacker can exploit this over the network without user interaction, with high impact on confidentiality, integrity and availability.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Sipay Electronic Money and Payment Services Inc. | OpenCart Virtual POS Module | 26.8.2 to before 26.9.1 | 26.9.1 | Patch available | CNA |
- OpenCart Virtual POS Module VendorSipay Electronic Money and Payment Services Inc. Affected 26.8.2 to before 26.9.1 Fixed in 26.9.1 Patch available CNA
Remediation
Update the Sipay OpenCart Virtual POS Module to version 26.9.1.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA OpenCart Virtual POS Module (Sipay Electronic Money and Payment Services Inc.) Fixed in 26.9.1
Timeline
- 2026-10-09 Threatist record created from CVE-2026-85531
- 2026-10-09 Alias added: GHSA-9f78-prj9-gr67
- 2026-10-13 CISA SSVC decision points changed
References
More Sipay Electronic Money and Payment Services Inc. vulnerabilities
- TI-2026-70005 Improper signature verification in Sipay PrestaShop Virtual POS Module CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-85531 · CVE Program
- CVE-2026-85531 · NVD
- FIRST EPSS
- GHSA-9f78-prj9-gr67 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences