The ProfilePress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.16.11. This is due to missing ownership validation on the change_plan_sub_id parameter in the process_checkout() function. The ppress_process_checkout AJAX handler accepts a user-controlled subscription ID intended for plan upgrades, loads the subscription record, and cancels/expires it without verifying the subscription belongs to the requesting user.
This makes it possible for authenticated attackers, with Subscriber-level access and above, to cancel and expire any other user's active subscription via the change_plan_sub_id parameter during checkout, causing immediate loss of paid access for victims.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Membe…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Membe…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Membe…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3474509/wp-user-avatar/trunk/src/M…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/74e4808f-bd6f-4e62-91…
security@wordfence.com