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# Zabbix API changes in 6.4

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## 6.4.21

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#### API

[ZBX-25732](https://support.zabbix.com/browse/ZBX-25732) Added support for `Authorization` HTTP request header and `OPTIONS` HTTP request method in cross-origin requests ([CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS)).

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## 6.4.19

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#### mediatype

[ZBX-25385](https://support.zabbix.com/browse/ZBX-25385) `mediatype.get`: Parameter `selectMessageTemplates` is now supported only for *Super admin* type users.<br>
[ZBX-25385](https://support.zabbix.com/browse/ZBX-25385) `mediatype.get`: *Admin* type users may now retrieve only the following [Media type object](/manual/api/reference/mediatype/object) properties: `mediatypeid`, `name`, `type`, `status`, `maxattempts`.<br>
[ZBX-25385](https://support.zabbix.com/browse/ZBX-25385) `mediatype.get`: When requesting user-related information of media types, *Admin* type users may now retrieve only data about their own user.

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## 6.4.5

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#### userdirectory

[ZBX-22800](https://support.zabbix.com/browse/ZBX-22800) `userdirectory.get`: Restored sorting by `name`.

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## 6.4.1

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#### script

[ZBX-19466](https://support.zabbix.com/browse/ZBX-19466) Changed validation of [Script](/manual/api/reference/script/object#script) object to be unique by combination of 2 properties: `name` and `menu_path`.

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#### user

[ZBXNEXT-8012](https://support.zabbix.com/browse/ZBXNEXT-8012) `user.checkAuthentication`: Added new parameter `token`.

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