Magento’s implementation of the Authorize.Net Direct Post payment method uses MD5 based hash. Authorize.net will stop supporting MD5 based hash usage on March 14, 2019. This will result in Magento merchants not being able to process payments using Authorize.Net Direct Post. To avoid this, merchants need to apply the patch provided by Magento and replace the existing MD5 hash with a Signature Key (SHA-512) in the Magento Admin configuration settings.

AFFECTED VERSIONS

• Magento Commerce 1.X.X
• Magento Open Source 1.X.X
• Magento Commerce 2.X.X
• Magento Open Source 2.X.X
• Magento Commerce (Cloud) 2.X.X
• Authorize.Net Direct Post

We strongly suggest to apply the patch as soon as possible if you are using Authorize.net to ensure the transactions are going through successfully.

You can find out more information on Update Authorize.net Direct Post from MD5 to SHA-512.

If you would like us to install the patches or upgrade to the latest version, please contact us: