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No exploitation reportedFix available

CVE-2020-8818

No exploitation reported by the sources we read.

  • Published2020-02-25
  • WeaknessCWE-346

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2020-02-2502:15CVE publishedNVD

Versions per branch

NVD · OSV
Adobe magento
BranchAffectedFixed in
2.3= 2.3.4no fix published
Cardgate cardgate payments
BranchAffectedFixed in
2.0≤ 2.0.30no fix published
cardgate/magento2
BranchAffectedFixed in
2.0< 2.0.332.0.33

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2020-02-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-qf6q-qfwp-vp44

Frequently asked questions

What is CVE-2020-8818?

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.

Is CVE-2020-8818 actively exploited?

Active exploitation of CVE-2020-8818 has not been confirmed. Its EPSS score was 4.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-8818?

CVE-2020-8818 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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