CVE-2020-8819
mediumpriority · track · 44EPSS 0.049 · 92 %ileexploit · PoCEUUSEPSS · scored 2026-10-26
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–8.1
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-5pq5-9phv-q5j3CardGate Payments plugin for WooCommerce does not validate request origin2022-05-24ghsa · osvUS
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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (15)
External citations — patches, advisories, analysis.
- https://github.com/cardgate/woocommerce/blob/f2111af7b1a3fd701c1c5916137f3ac09482feeb/cardgate/cardgate.php#L426-L442cnnvd
- https://github.com/cardgate/woocommerce/issues/18cnnvd
- https://packetstormsecurity.com/files/156504/WordPress-WooCommerce-CardGate-Payment-Gateway-3.1.15-Bypass.htmlcnnvd
- https://wpvulndb.com/vulnerabilities/10097cnnvd
- https://www.exploit-db.com/exploits/48134cnnvd
- http://packetstormsecurity.com/files/156504/WordPress-WooCommerce-CardGate-Payment-Gateway-3.1.15-Bypass.htmlenisa_euvd
- https://github.com/cardgate/woocommerce/blob/f2111af7b1a3fd701c1c5916137f3ac09482feeb/cardgate/cardgate.php#L426-L442enisa_euvd
- https://github.com/cardgate/woocommerce/issues/18enisa_euvd
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