Answer in brief
CVE-2026-103324 records a Medium severity (CVSS 5.3) vulnerability in Cardinity Payment Gateway for WooCommerce 3.2.6 - 3.4.1 - Unauthenticated Arbitrary Order Payment Forgery via Empty-Default Project Secret. The current sources do not mark it as known exploited. The current feed maps Unknown/Cardinity Payment Gateway for WooCommerce (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/Cardinity Payment Gateway for WooCommerce (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Cardinity Payment Gateway for WooCommercegeneric | >=3.2.6 <3.4.2 | 3.4.2 |
Published upstream
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.