Is CVE-2026-12093 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-12093 being exploited in the wild.

How severe is CVE-2026-12093?

Medium severity, with a CVSS score of 5.3, published 18 June 2026.

Which products and versions are affected?

wpinsider-1 Simple Membership up to, and including, 4.7.5.

Is there a fix for CVE-2026-12093?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-12093 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-12093?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-12093: Simple Membership WordPress plugin authorization bypass in Stripe webhooks

CVE-2026-12093 · Severity: medium · CVSS 5.3 · Published 2026-06-18

The Simple Membership plugin for WordPress, which manages user subscriptions and access, contains a flaw that allows unauthorized individuals to deactivate member accounts. By sending a fake payment refund notification, an attacker can trick the system into marking a legitimate user's account as inactive. This can lead to service disruptions for customers and automated cancellation emails being sent without cause.

Quick answers

Is CVE-2026-12093 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-12093 being exploited in the wild.
How severe is CVE-2026-12093?: Medium severity, with a CVSS score of 5.3, published 18 June 2026.
Which products and versions are affected?: wpinsider-1 Simple Membership up to, and including, 4.7.5.
Is there a fix for CVE-2026-12093?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-12093 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-12093?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Simple Membership plugin for WordPress suffers from a missing authorization check (CWE-862) in its Stripe webhook handling logic. Unauthenticated attackers can forge a 'charge.refunded' webhook event containing a target's subscription ID. If the 'stripe-webhook-signing-secret' is not configured (the default state), the plugin fails to verify the authenticity of the request via HMAC, subsequently setting the member's 'account_state' to 'inactive'. This triggers cancellation hooks and modifies transaction records. The vulnerability is mitigated if a webhook signing secret is properly configured.

Affected products

wpinsider-1 Simple Membership up to, and including, 4.7.5

Timeline

2026-06-18: disclosed
2026-06-18: advisory

References

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