An issue was discovered in the CardGate Payments plugin through 2.0.30 for Magento 2.
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-346.
Summary
An issue was discovered in the CardGate Payments plugin through 2.0.30 for Magento 2. Lack of origin authentication in the IPN callback processing function in Controller/Payment/Callback.php allows an attacker to remotely replace critical plugin settings (merchant ID, secret key, etc.) and therefore bypass the payment process (e.g., spoof an order status by manually sending an IPN callback request with a valid signature but without real payment) and/or receive all of the subsequent payments.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | cardgate/magento2 (Packagist) | before 2.0.33 | 2.0.33 | Patch available | GHSA-qf6q-qfwp-vp44 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- cardgate/magento2 (Packagist) Vendor— Affected before 2.0.33 Fixed in 2.0.33 Patch available GHSA-qf6q-qfwp-vp44
Remediation
- Fix · GHSA-qf6q-qfwp-vp44 cardgate/magento2 (Packagist) Fixed in 2.0.33 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8818
- 2026-10-03 Alias added: GHSA-qf6q-qfwp-vp44
References
Exploit 3
Sources
- CVE-2020-8818 · CVE Program
- CVE-2020-8818 · NVD
- FIRST EPSS
- GHSA-qf6q-qfwp-vp44 · GitHub Advisory Database · CC BY 4.0
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