CVE-2026-103308 Auth bypass in Visma Pay for WooCommerce
Unauthenticated attackers can mark orders as paid and disclose customer personal data due to missing verification in the payment gateway return endpoint.
- 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-2026-103308?
CVE-2026-103308 is a medium-severity authentication bypass vulnerability in Unknown Visma Pay for WooCommerce, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Visma Pay for WooCommerce WordPress plugin before 1.2.2 does not verify the authenticity of payment gateway return requests, relying on a merchant secret that is empty on a store which has not entered its credentials, allowing unauthenticated attackers to mark arbitrary orders as paid and to disclose the name, email address and postal address of any order's customer.
Weakness: CWE-345
Which versions are affected by CVE-2026-103308?
How do I fix CVE-2026-103308?
No fix has been published for CVE-2026-103308 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-103308 being exploited?
There is no known exploitation of CVE-2026-103308 in the wild and no public exploit code.
Sources
Also known as GHSA-9j38-wfx7-32r6.