CVE-2026-103324 Business logic in Cardinity Payment Gateway for WooCommerce
Unauthenticated attackers can forge payment notifications to mark arbitrary orders as paid or failed due to an empty default signing secret.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103324?
CVE-2026-103324 is a medium-severity vulnerability in Unknown Cardinity Payment Gateway for WooCommerce, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-345
Which versions are affected by CVE-2026-103324?
How do I fix CVE-2026-103324?
No fix has been published for CVE-2026-103324 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-103324 being exploited?
There is no known exploitation of CVE-2026-103324 in the wild and no public exploit code.
Sources
Also known as GHSA-gpxw-6pc7-r537.