CVE-2020-8819

Cardgate Payments vulnerability

CVSS

8.1

EPSS

4.9%

EPSS pct

91th

Exploited

No known

An issue was discovered in the CardGate Payments plugin through 3.1.15 for WooCommerce. Lack of origin authentication in the IPN callback processing function in cardgate/cardgate.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.

Affected vendor

Cardgate

Affected product

Cardgate Payments

CVSS vector

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

Weakness type (CWE)

CWE-346 — Origin Validation Error

Published

2020-02-25

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity.

Its EPSS score of 4.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2020-8819

Confirm whether Cardgate Cardgate Payments is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-8819.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-8819

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-8819 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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