CVE-2026-77789 Stripe Payment Forms by WP Full Pay < 8.5.1 - Cross-Customer Subscription Modification via IDOR
Attackers with valid portal sessions can modify or cancel other customers' subscriptions due to missing ownership verification in the WP Full Pay plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77789?
CVE-2026-77789 is a medium-severity missing authorization vulnerability in Unknown Stripe Payment Forms by WP Full Pay, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.1 does not verify that a subscription belongs to the customer bound to the requesting customer-portal session before acting on it, allowing a user with a confirmed portal session to cancel, reactivate or modify subscriptions belonging to other customers.
Weakness: CWE-639
Which versions are affected by CVE-2026-77789?
How do I fix CVE-2026-77789?
No fix has been published for CVE-2026-77789 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77789 being exploited?
There is no known exploitation of CVE-2026-77789 in the wild and no public exploit code.
Sources
Also known as GHSA-wq46-399w-9f66.