App is render as 'iframe' micro app and there is another 'iframe' within microapp 'iframe'.

Micro app iframe renders as below:

sandbox="allow-scripts allow-popups allow-modals allow-forms allowdownloads allow-same-origin"

when inner iframe try to access outer iframe then it creates below error:

Blocked a frame with other "https://microapp-ifram.com" from accessing a cross origin frame.`

Is there any way on "sandbox" parameter which can allow cross origin ?

By removing "sandbox" it worked but having "sandbox" causes CORS issue. I can not remove "sandbox" as its not in control. but, I can add any additional attribute to fix CORS.

Something like this if any valid sandbox parameter: sandbox="allow-scripts allow-popups allow-modals allow-forms allowdownloads allow-same-origin <ALLOW CROSS ORIGIN> "