CVE-2020-8819

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.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

5.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:N

EPSS

4.88% chance of exploitation in the next 30 days, 92nd percentile

Published

2020-02-25

Updated

2024-08-04

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/156504/WordPress-WooCommerce-CardGate-Payment-Gatewa…
• cardgate/woocommerce/blob/f2111af7b1a3fd701c1c5916137f3ac09482feeb/cardgate/cardgate.php#…3★ · 2026-10-06

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/48134

Security advisories

• https://wpvulndb.com/vulnerabilities/10097
• advisories/GHSA-5pq5-9phv-q5j3

References

• CVE Record
• NVD entry

Related

• CVE-2020-8818