The WP Full Stripe Free plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 8.4.3 via the wpfs_update_failed_payment_status AJAX action. The handler is registered through both wp_ajax_ and wp_ajax_nopriv_ hooks and the underlying update_failed_payment_status() function performs no capability check, no nonce verification, and no logged-in check before calling $this->db->updatePaymentByEventId() with attacker-controlled POST parameters. This makes it possible for unauthenticated attackers who can obtain a valid Stripe Payment Intent ID for the target site (Payment Intent IDs are exposed to the customer browser during normal Stripe.js checkout flows) to manipulate payment records in the site's database, marking previously successful payments as failed and overwriting failure codes and messages with attacker-supplied values.
CVE-2026-12432 is a medium severity with CVSS 5.3 Vulnerability issue affecting the Plugin Stripe Payment Forms by WP Full Pay – Accept Credit Card Payments, Donations & Subscriptions. It affects Versions up to 8.4.3 and is fixed in 8.5.0.
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CVE-2026-12432 is tracked for the Plugin Stripe Payment Forms by WP Full Pay – Accept Credit Card Payments, Donations & Subscriptions as medium severity with CVSS 5.3. The affected range is Versions up to 8.4.3. Update Stripe Payment Forms by WP Full Pay – Accept Credit Card Payments, Donations & Subscriptions to 8.5.0 or newer where that version is compatible with the site.
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This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 8.4.3.
Confirm Stripe Payment Forms by WP Full Pay – Accept Credit Card Payments, Donations & Subscriptions is updated to 8.5.0 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
wp-full-stripe-free
View on wordpress.org
|
| CVE | CVE-2026-12432 |
| Patched Versions |
8.5.0
|
| Affected Versions |
Versions up to 8.4.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Stripe Payment Forms <= 8.3.1 - Unauthenticated SQL Injection
WP Full Stripe Free <= 8.2.5 - Authenticated (Administrator+) SQL Injection
WP Full Stripe Free <= 7.0.5 - Authenticated (Administrator+) Stored Cross-Site Scripting
WP Full Stripe Free <= 7.0.5 - Authenticated (Administrator+) Stored Cross-Site Scripting
Stripe Payment Forms by WP Full Pay – Accept Credit Card Payments, Donations & Subscriptions <= 8.4.1 - Missing Authorization
WP Full Stripe Free <= 7.0.17 - Cross-Site Request Forgery
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