ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-103324

Cardinity Payment Gateway for WooCommerce 3.2.6 - 3.4.1 - Unauthenticated Arbitrary Order Payment Forgery via Empty-Default Project Secret

Published Oct 15, 2026 · catalog updated Oct 15, 2026 · Unknown Cardinity Payment Gateway for WooCommerce

Check if you run it

No confirmed exploitation is on record for CVE-2026-103324. EPSS is 0.13%. Act only if a listed version of Unknown Cardinity Payment Gateway for WooCommerce is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Not established
Affected products
vendor Unknown Cardinity Payment Gateway for WooCommerce

The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mark arbitrary orders as paid, or force them to failed.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Unknown Cardinity Payment Gateway for WooCommerceversion unspecified

How to fix CVE-2026-103324

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-103324. EPSS is 0.13%. Act only if a listed version of Unknown Cardinity Payment Gateway for WooCommerce is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-345: Insufficient Verification of Data Authenticity. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · NIST NVD

    Detected

    The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mark arbitrary orders as paid, or force them to failed.

  2. Oct 15, 2026 · NIST NVD

    Updated

    The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mark arbitrary orders as paid, or force them to failed.

  3. Oct 15, 2026 · NIST NVD

    Updated

    The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mark arbitrary orders as paid, or force them to failed.

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-103324

    The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment not

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-103324

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-103324

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-103324

    The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment not

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.