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CVE-2020-8819

31
FAUCET Score

CVE-2020-8819 is a critical vulnerability affecting the CardGate Payments plugin up to version 3.1.15 for WooCommerce. It stems from a lack of origin authentication in the IPN callback processing function, allowing authenticated attackers to remotely alter crucial plugin settings like merchant ID and secret key. This high-severity flaw (CVSS 8.1) enables attackers to bypass the payment process, spoof order statuses, or redirect future payments. While not actively exploited in the wild, a public exploit is available on ExploitDB, though there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.15CPE matchmatch criteria
cpe:2.3:a:cardgate:cardgate_payments:*:*:*:*:*:woocommerce:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.88%
Probability of exploitation in next 30 days
EPSS Percentile
91.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-48134 · Feb 25, 2020
This CVE's current EPSS score of 0.0488 is in the 91st percentile among its peer group of 17,829 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: cardgate/woocommerceFixed in: 3.1.16

Vendor Advisories (1)

composerGHSA-5pq5-9phv-q5j3high

CardGate Payments plugin for WooCommerce does not validate request origin

May 24, 2022

References

packetstormsecurity.com / files/156504/WordPress-WooCommerce-CardGate-Payment-Gateway-3.1.15-Bypass.html
ExploitThird Party AdvisoryVDB Entry
github.com / cardgate/woocommerce/blob/f2111af7b1a3fd701c1c5916137f3ac09482feeb/cardgate/cardgate.php
ExploitThird Party Advisory
github.com / cardgate/woocommerce/issues/18
ExploitThird Party Advisory
wpvulndb.com / vulnerabilities/10097
Third Party Advisory
exploit-db.com / exploits/48134
ExploitThird Party AdvisoryVDB Entry