If users use cross-domain communication, attackers can create an iframe and listen to any messages sent from the app and also send messages to the app. This happens only in the same browser so this is low impact.
Example exploit, if you upload this file to any domain, you can intercept messages from http://jcubic.pl/sysend.php
jcubic
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Leaking of potential sensitive user information on Cross-Domain communication
Leaking of potentially sensitive user information on Cross-Domain communication
Mar 13, 2022
If users use cross-domain communication, attackers can create an iframe and listen to any messages sent from the app and also send messages to the app. This happens only in the same browser so this is low impact.
Example exploit, if you upload this file to any domain, you can intercept messages from http://jcubic.pl/sysend.php
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