CVE-2026-80311: 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 8.5.5 contains an authorization bypass vulnerability. It does not verify that a subscription belongs to the customer associated with the current customer-portal session before allowing cancellation. This flaw allows an authenticated user with a confirmed portal session to cancel subscriptions belonging to other customers if they know the subscription identifier. The subscription identifier is high-entropy and not enumerable through the plugin, limiting exploitation. The vulnerability has a CVSS score of 4.3, indicating medium severity.
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-2026-80311 is an authorization bypass vulnerability in the Stripe Payment Forms by WP Full Pay WordPress plugin versions prior to 8.5.5. The plugin fails to verify ownership of a subscription before processing cancellation requests via the customer portal session. An attacker with a valid portal session can cancel subscriptions of other customers by supplying the subscription identifier. The subscription ID is high-entropy and not discoverable through the plugin interface, which reduces the likelihood of exploitation. No official remediation or patch information is provided in the available data.
Potential Impact
An attacker with a confirmed customer-portal session can cancel subscriptions belonging to other customers, leading to unauthorized disruption of service or subscription management. There is no direct confidentiality or availability impact reported. The impact is limited to integrity, specifically unauthorized modification of subscription status.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to customer-portal sessions to trusted users only and monitor for suspicious cancellation activity. Avoid sharing subscription identifiers publicly to reduce the risk of targeted exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-26T08:29:53.085Z
- State
- PUBLISHED
Threat ID: 6a927abaacd9273b496bdf12
Added to database: 08/29/2026, 06:22:50 UTC
Last enriched: 09/09/2026, 21:53:33 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 81
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