OAuth {#oauth}
==============

26.04.02
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) Corrected the supported DigitCert CAs. The same CA can be used for both production and test environments. See [Enable Mutual Authentication](https://developer.cybersource.com/docs/cybs/en-us/oauth/developer/all/rest/oauth/Supporting-Mutual-Authentication.md "").

26.04.01
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added list of supported DigiCert CAs for the test environment. See [Enable Mutual Authentication](https://developer.cybersource.com/docs/cybs/en-us/oauth/developer/all/rest/oauth/Supporting-Mutual-Authentication.md "").  
![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added additional information about the deprecated DigiCert CAs and how to know if you are affected by the no longer supported DigiCert CAs. See [Enable Mutual Authentication](https://developer.cybersource.com/docs/cybs/en-us/oauth/developer/all/rest/oauth/Supporting-Mutual-Authentication.md "").