Mollie is the payment service provider that we use to process online payments.
Here is the answer they posted on their website:
The Log4Shell flaw (CVE-2021-44228) is a previously unknown and critical vulnerability that was publicly shared on 9 December, 2021. This vulnerability impacts multiple versions of the widely used software tool, Apache Log4j 2. On 14 December, 2021, a second vulnerability (CVE-2021-45046) that affects Log4j was found and shared.
Mollie does not use the Apache Log4j utility and is not directly impacted by either of these vulnerabilities. Out of an abundance of caution, we are investigating with our suppliers and partners if these flaws may indirectly impact any of our services. If any irregularities are discovered, we will take immediate action to prevent any impact to our customers and services. You can continue to use our services as normal.
Additionally, we also do not use the program Log4J on our platform.