CVE-2026-80311 Stripe Payment Forms by WP Full Pay < 8.5.5 - Cross-Customer Subscription Cancellation via IDOR
An attacker with a valid session can cancel other customers' subscriptions by guessing high-entropy identifiers due to missing ownership verification.
- 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-2026-80311?
CVE-2026-80311 is a medium-severity missing authorization vulnerability in Unknown Stripe Payment Forms by WP Full Pay, published on 29 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 8.5.5 does not verify that a subscription belongs to the customer bound to the requesting customer-portal session before cancelling it, allowing a user with a confirmed portal session to cancel subscriptions belonging to other customers.
Exploitation requires the attacker to know the target subscription's identifier, which is high-entropy and not enumerable through the Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.5.
Weakness: CWE-639
Which versions are affected by CVE-2026-80311?
How do I fix CVE-2026-80311?
No fix has been published for CVE-2026-80311 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-2026-80311 being exploited?
There is no known exploitation of CVE-2026-80311 in the wild and no public exploit code.
Sources
Also known as GHSA-prcx-3pc2-2j8x.