CVE-2026-12093
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/classes/class.swpm-wp-loaded-tasks.php#L96
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm-stripe-webhook-handler.php#L297
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm-stripe-webhook-handler.php#L71
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm_handle_subsc_ipn.php#L381
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/classes/class.swpm-wp-loaded-tasks.php#L96
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm-stripe-webhook-handler.php#L297
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm-stripe-webhook-handler.php#L71
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm_handle_subsc_ipn.php#L381
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3573852%40simple-membership&new=3573852%40simple-membership&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2f91a7c3-ee0e-48e9-aa5f-dfc1160bbc09?source=cve
CWEs
CWE-862
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.