Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Member
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Member
- https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.16.9/src/Member
- https://plugins.trac.wordpress.org/changeset/3474509/wp-user-avatar/trunk/src/Me
- https://www.wordfence.com/threat-intel/vulnerabilities/id/74e4808f-bd6f-4e62-91c
FAQ
What is CVE-2026-3453?
CVE-2026-3453 is a vulnerability with a CVSS score of 8.1 (HIGH). 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_su...
How severe is CVE-2026-3453?
CVE-2026-3453 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3453?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.