Vulnerability Description
The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to, and including, 4.7.0 via the Stripe webhook handler. This is due to the plugin only validating webhook signatures when the stripe-webhook-signing-secret setting is configured, which is empty by default. This makes it possible for unauthenticated attackers to forge Stripe webhook events to manipulate membership subscriptions, including reactivating expired memberships without payment or canceling legitimate subscriptions, potentially leading to unauthorized access and service disruption.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/classes/class
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/ipn/swpm-stri
- https://plugins.trac.wordpress.org/changeset/3453404/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/4e4df9a6-8f7d-428b-a59
FAQ
What is CVE-2026-1461?
CVE-2026-1461 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to, and including, 4.7.0 via the Stripe webhook handler. This is due to the plugin on...
How severe is CVE-2026-1461?
CVE-2026-1461 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1461?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.