CVE-2026-77789: CWE-639 Authorization Bypass Through User-Controlled Key in Stripe Payment Forms by WP Full Pay
Description
The Stripe Payment Forms by WP Full Pay WordPress plugin before version 8.5.1 contains an authorization bypass vulnerability. It fails to verify that a subscription belongs to the customer associated with the requesting customer-portal session. This flaw allows a user with a confirmed portal session to cancel, reactivate, or modify subscriptions of other customers.
CVSS v3.1
Score 4.3medium
Affected software
Stripe Payment Forms by WP Full Pay
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-77789 is an authorization bypass vulnerability (CWE-639) in the Stripe Payment Forms by WP Full Pay WordPress plugin prior to version 8.5.1. The plugin does not properly verify ownership of subscriptions before allowing actions such as cancellation, reactivation, or modification. This permits authenticated users with a valid portal session to manipulate subscriptions belonging to other customers, potentially impacting subscription management integrity.
Potential Impact
An attacker with a confirmed customer-portal session can perform unauthorized subscription management actions on other customers' subscriptions, including cancellation, reactivation, or modification. This could lead to disruption of service or unauthorized changes to subscription status. There is no direct confidentiality or availability impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should upgrade to version 8.5.1 or later once available. Until then, restrict access to customer-portal sessions to trusted users only and monitor for suspicious subscription management activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-21T12:09:00.836Z
- State
- PUBLISHED
Threat ID: 6a8e82c0acd9273b4979d51e
Added to database: 08/26/2026, 06:08:00 UTC
Last enriched: 09/10/2026, 11:53:47 UTC
Last updated: 10/10/2026, 18:48:22 UTC
Views: 63
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