Simple Membership <= 4.7.5 - Missing Authorization to Unauthenticated Arbitrary Member Account Deactivation via Forged Stripe 'charge.refunded' Webhook
| CVE | CVE-2026-12093 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | June 17, 2026 |
| Last Updated | June 18, 2026 |
| Researcher |
Nikita Fenko
- self
|
Description
The Simple Membership plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.7.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to deactivate arbitrary member accounts by forging a charge.refunded webhook event containing a victim's subscription ID, setting the target member's account_state to 'inactive' and triggering cancellation hooks, transaction-record status changes, and cancellation notification emails. This vulnerability is exploitable only on installations where no Stripe webhook signing secret has been configured, which is the default out-of-the-box state; sites that have configured the stripe-webhook-signing-secret option are routed to the properly verified HMAC path and are not affected.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Simple Membership
| Software Type | Plugin |
|---|---|
| Software Slug | simple-membership (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.7.6, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Simple Membership
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