CVE-2020-8818: adobe magento Origin Validation Error
Vulnerability summary
CVE-2020-8818 is a high (CVSS 8.1) Origin Validation Error vulnerability in adobe magento. EPSS estimates a 4.17% chance of exploitation in the next 30 days, higher than 90.8% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 25-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
4.17%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.17% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundMagento2
Maturity: poc
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Adobe1 product
- magento2.3.4
Cardgate1 product
- cardgate_payments≤ 2.0.30
2 vendors · 2 products
References
3 links- packetstormsecurity.com/files/156505/Magento-WooCommerce-CardGate-Payment-Gateway-2.0.30-Bypass.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry