Automattic: [api.tumblr.com] Denial of Service by cookies manipulation

Hello Summary: I have found at api.tumblr.com two parameters consumerkey && consumersecret allow to modify oa-consumerkey && oaconsumersecret cookies values and property. An attacker can send a malicious link to reset the cookies of api.tumblr.com, this lead to DOS. To trigger the DOS, the...

Automattic: [api.tumblr.com] Exploiting clickjacking vulnerability to trigger self DOM-based XSS

Hello i have found a clickjacking vulnerability in https://api.tumblr.com/console/ And a self DOM-based XSS In https://api.tumblr.com/console/calls/user/follow/unfollow A attacker can exploit the clickjacking to trigged the self DOM-based XSS Vulnerable URL to clickjacking :...